diff --git a/app/src/main/res/values-co/strings.xml b/app/src/main/res/values-co/strings.xml
index 9f98c7598..889c2ad03 100644
--- a/app/src/main/res/values-co/strings.xml
+++ b/app/src/main/res/values-co/strings.xml
@@ -739,7 +739,7 @@
     <!-- An option to connect additional devices -->
     <string name="sync_connect_device">Cunnettà un altru apparechju</string>
     <!-- The dialog text shown when additional devices are not available -->
-    <string name="sync_connect_device_dialog">Per mandà un’unghjetta, cunnettatevi à u vostru contu Firefox nant’à al menu un altru apparechju.</string>
+    <string name="sync_connect_device_dialog">Per mandà un’unghjetta, cunnettatevi à u vostru contu Firefox nant’à omancu un altru apparechju.</string>
     <!-- Confirmation dialog button -->
     <string name="sync_confirmation_button">Ahju capitu</string>
     <!-- Share error message -->
@@ -1402,4 +1402,5 @@
     <string name="voice_search_content_description">Ricerca vucale</string>
     <!-- Voice search prompt description displayed after the user presses the voice search button -->
     <string name="voice_search_explainer">Parlate avà</string>
-</resources>
+
+    </resources>
diff --git a/app/src/main/res/values-en-rGB/strings.xml b/app/src/main/res/values-en-rGB/strings.xml
index c8625b354..97e6ec692 100644
--- a/app/src/main/res/values-en-rGB/strings.xml
+++ b/app/src/main/res/values-en-rGB/strings.xml
@@ -94,6 +94,8 @@
     <string name="browser_menu_add_to_homescreen">Add to Home screen</string>
     <!-- Browser menu toggle that installs a Progressive Web App shortcut to the site on the device home screen. -->
     <string name="browser_menu_install_on_homescreen">Install</string>
+    <!-- Menu option on the toolbar that takes you to synced tabs page-->
+    <string name="synced_tabs">Synchronised Tabs</string>
     <!-- Browser menu button that opens the find in page menu -->
     <string name="browser_menu_find_in_page">Find in page</string>
     <!-- Browser menu button that creates a private tab -->
@@ -289,6 +291,8 @@
     <string name="preferences_sync_bookmarks">Bookmarks</string>
     <!-- Preference for syncing logins -->
     <string name="preferences_sync_logins">Logins</string>
+    <!-- Preference for syncing tabs -->
+    <string name="preferences_sync_tabs">Tabs</string>
     <!-- Preference for signing out -->
     <string name="preferences_sign_out">Sign out</string>
     <!-- Preference displays and allows changing current FxA device name -->
@@ -420,6 +424,8 @@
     <string name="library_desktop_bookmarks_unfiled">Other Bookmarks</string>
     <!-- Option in Library to open History page -->
     <string name="library_history">History</string>
+    <!-- Option in Library to open Synced Tabs page -->
+    <string name="library_synced_tabs">Synchronised Tabs</string>
     <!-- Option in Library to open Reading List -->
     <string name="library_reading_list">Reading List</string>
     <!-- Menu Item Label for Search in Library -->
@@ -941,6 +947,8 @@
     <string name="onboarding_tracking_protection_standard_button_description">Blocks fewer trackers but allows pages to load normally</string>
     <!-- text for tracking protection radio button option for strict level of blocking -->
     <string name="onboarding_tracking_protection_strict_button">Strict (recommended)</string>
+    <!-- text for tracking protection radio button option for strict level of blocking -->
+    <string name="onboarding_tracking_protection_strict_option">Strict</string>
     <!-- text for strict blocking option button description -->
     <string name="onboarding_tracking_protection_strict_button_description">Blocks more trackers for better protection and performance, but may cause some sites to not work properly</string>
     <!-- text for the toolbar position card header
@@ -1386,4 +1394,15 @@
     <string name="voice_search_content_description">Voice search</string>
     <!-- Voice search prompt description displayed after the user presses the voice search button -->
     <string name="voice_search_explainer">Speak now</string>
+
+    <!-- Synced Tabs -->
+    <!-- Text displayed when user is not logged into a Firefox Account -->
+    <string name="synced_tabs_connect_to_sync_account">Connect with a Firefox Account.</string>
+    <!-- Text displayed to ask user to connect another device as no devices found with account -->
+    <string name="synced_tabs_connect_another_device">Connect another device.</string>
+    <!-- Text displayed asking user to re-authenticate -->
+    <string name="synced_tabs_reauth">Please re-authenticate.</string>
+    <!-- Text displayed when user has disabled tab syncing in Firefox Sync Account -->
+    <string name="synced_tabs_enable_tab_syncing">Please enable tab synchronisation.</string>
+
 </resources>
diff --git a/app/src/main/res/values-gn/strings.xml b/app/src/main/res/values-gn/strings.xml
index b8a44201b..ee0a19f2c 100644
--- a/app/src/main/res/values-gn/strings.xml
+++ b/app/src/main/res/values-gn/strings.xml
@@ -99,6 +99,8 @@
     <string name="browser_menu_add_to_homescreen">Embojuaju mba’erechaha ñepyrũgua</string>
     <!-- Browser menu toggle that installs a Progressive Web App shortcut to the site on the device home screen. -->
     <string name="browser_menu_install_on_homescreen">Mohenda</string>
+    <!-- Menu option on the toolbar that takes you to synced tabs page-->
+    <string name="synced_tabs">Tendayke mbojuehepyre</string>
     <!-- Browser menu button that opens the find in page menu -->
     <string name="browser_menu_find_in_page">Eheka kuatiaroguépe</string>
     <!-- Browser menu button that creates a private tab -->
@@ -295,6 +297,8 @@
     <string name="preferences_sync_bookmarks">Techaukaha</string>
     <!-- Preference for syncing logins -->
     <string name="preferences_sync_logins">Tembiapo ñepyrũ</string>
+    <!-- Preference for syncing tabs -->
+    <string name="preferences_sync_tabs">Tendayke</string>
     <!-- Preference for signing out -->
     <string name="preferences_sign_out">Emboty tembiapo</string>
     <!-- Preference displays and allows changing current FxA device name -->
@@ -428,6 +432,8 @@
     <string name="library_desktop_bookmarks_unfiled">Ambue techaukahakuéra</string>
     <!-- Option in Library to open History page -->
     <string name="library_history">Tembiasakue</string>
+    <!-- Option in Library to open Synced Tabs page -->
+    <string name="library_synced_tabs">Tendayke mbojuehepyre</string>
     <!-- Option in Library to open Reading List -->
     <string name="library_reading_list">Moñe’ẽrã rysýi</string>
 
@@ -965,6 +971,8 @@
     <string name="onboarding_tracking_protection_standard_button_description">Ojoko’ive tapykuehoha hákatu omoneĩ kuatiarogue henyhẽvo hekopete</string>
     <!-- text for tracking protection radio button option for strict level of blocking -->
     <string name="onboarding_tracking_protection_strict_button">Mbaretépe (jeroviaháva)</string>
+    <!-- text for tracking protection radio button option for strict level of blocking -->
+    <string name="onboarding_tracking_protection_strict_option">Mbaretépe</string>
     <!-- text for strict blocking option button description -->
     <string name="onboarding_tracking_protection_strict_button_description">Ejokove tapykuehoha eñemo’ãve ha apopykuaave hag̃ua, hákatu ikatu avei oimeraẽva tenda nahenyhẽi hekopete</string>
     <!-- text for the toolbar position card header
@@ -1422,4 +1430,15 @@
     <string name="voice_search_content_description">Hekaha ñe’ẽgua</string>
     <!-- Voice search prompt description displayed after the user presses the voice search button -->
     <string name="voice_search_explainer">Eñe’ẽ ko’ág̃a</string>
+
+    <!-- Synced Tabs -->
+    <!-- Text displayed when user is not logged into a Firefox Account -->
+    <string name="synced_tabs_connect_to_sync_account">Eike Firefox Account ndive.</string>
+    <!-- Text displayed to ask user to connect another device as no devices found with account -->
+    <string name="synced_tabs_connect_another_device">Emoinge ambue mba’e’oka.</string>
+    <!-- Text displayed asking user to re-authenticate -->
+    <string name="synced_tabs_reauth">Ikatúpiko emoneĩjey.</string>
+    <!-- Text displayed when user has disabled tab syncing in Firefox Sync Account -->
+    <string name="synced_tabs_enable_tab_syncing">Embojuruja tendayke ñembojuehe.</string>
+
 </resources>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index 733fc3e15..1409785ba 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -95,6 +95,8 @@
     <string name="browser_menu_add_to_homescreen">Agg. a schermata principale</string>
     <!-- Browser menu toggle that installs a Progressive Web App shortcut to the site on the device home screen. -->
     <string name="browser_menu_install_on_homescreen">Installa</string>
+    <!-- Menu option on the toolbar that takes you to synced tabs page-->
+    <string name="synced_tabs">Schede sincronizzate</string>
     <!-- Browser menu button that opens the find in page menu -->
     <string name="browser_menu_find_in_page">Trova nella pagina</string>
     <!-- Browser menu button that creates a private tab -->
@@ -299,6 +301,8 @@
     <string name="preferences_sync_bookmarks">Segnalibri</string>
     <!-- Preference for syncing logins -->
     <string name="preferences_sync_logins">Credenziali</string>
+    <!-- Preference for syncing tabs -->
+    <string name="preferences_sync_tabs">Schede</string>
     <!-- Preference for signing out -->
     <string name="preferences_sign_out">Disconnetti</string>
     <!-- Preference displays and allows changing current FxA device name -->
@@ -436,6 +440,8 @@
     <string name="library_desktop_bookmarks_unfiled">Altri segnalibri</string>
     <!-- Option in Library to open History page -->
     <string name="library_history">Cronologia</string>
+    <!-- Option in Library to open Synced Tabs page -->
+    <string name="library_synced_tabs">Schede sincronizzate</string>
     <!-- Option in Library to open Reading List -->
     <string name="library_reading_list">Elenco lettura</string>
     <!-- Menu Item Label for Search in Library -->
@@ -986,6 +992,8 @@
     <string name="onboarding_tracking_protection_standard_button_description">Blocca un numero ridotto di elementi traccianti, ma consente alle pagine di caricarsi correttamente</string>
     <!-- text for tracking protection radio button option for strict level of blocking -->
     <string name="onboarding_tracking_protection_strict_button">Restrittiva (consigliata)</string>
+    <!-- text for tracking protection radio button option for strict level of blocking -->
+    <string name="onboarding_tracking_protection_strict_option">Restrittiva</string>
     <!-- text for strict blocking option button description -->
     <string name="onboarding_tracking_protection_strict_button_description">Blocca più elementi traccianti, aumentando la protezione, ma alcuni siti potrebbero non funzionare correttamente</string>
     <!-- text for the toolbar position card header
@@ -1431,4 +1439,7 @@
     <string name="voice_search_content_description">Ricerca vocale</string>
     <!-- Voice search prompt description displayed after the user presses the voice search button -->
     <string name="voice_search_explainer">Parla ora</string>
-</resources>
+
+    <!-- Text displayed to ask user to connect another device as no devices found with account -->
+    <string name="synced_tabs_connect_another_device">Connetti un altro dispositivo.</string>
+    </resources>
diff --git a/app/src/main/res/values-kab/strings.xml b/app/src/main/res/values-kab/strings.xml
index 5393ef7de..7e7460f4f 100644
--- a/app/src/main/res/values-kab/strings.xml
+++ b/app/src/main/res/values-kab/strings.xml
@@ -1420,4 +1420,9 @@ Tiktiwin tigejdanin yuzzlen ur nṣeḥḥi ara
     <string name="synced_tabs_connect_to_sync_account">Qqen s umiḍan Firefox.</string>
     <!-- Text displayed to ask user to connect another device as no devices found with account -->
     <string name="synced_tabs_connect_another_device">Qqen ibenk-nniḍen.</string>
-    </resources>
+    <!-- Text displayed asking user to re-authenticate -->
+    <string name="synced_tabs_reauth">Ma ulac aɣilif, ales asesteb.</string>
+    <!-- Text displayed when user has disabled tab syncing in Firefox Sync Account -->
+    <string name="synced_tabs_enable_tab_syncing">Ma ulac aɣilif, rmed amtawi n waccaren.</string>
+
+</resources>
diff --git a/app/src/main/res/values-lo/strings.xml b/app/src/main/res/values-lo/strings.xml
index 0e1122b27..1af51516f 100644
--- a/app/src/main/res/values-lo/strings.xml
+++ b/app/src/main/res/values-lo/strings.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <!-- App name for private browsing mode, only the "Private" portion should be localized. -->
-    <string name="app_name_private_2">Firefox Preview ສ່ວນຕົວ</string>
-    <!-- App name for private browsing mode, only the "Private" portion should be localized. -->
-    <string name="app_name_private_3">Firefox Preview (ສ່ວນຕົວ)</string>
+    <!-- App name for private browsing mode. The first parameter is the name of the app defined in app_name (for example: Fenix)-->
+    <string name="app_name_private_5">ສ່ວນຕົວ %s</string>
+    <!-- App name for private browsing mode. The first parameter is the name of the app defined in app_name (for example: Fenix)-->
+    <string name="app_name_private_4">%s (ສ່ວນຕົວ)</string>
     <!-- Home Fragment -->
     <!-- Content description (not visible, for screen readers etc.): "Three dot" menu button. -->
     <string name="content_description_menu">ຕົວເລືອກເພີ່ມເຕີມ</string>
@@ -18,6 +18,12 @@
     <!-- No Open Tabs Message Description -->
     <string name="no_open_tabs_description">ແທັບທີ່ເປີດຂອງທ່ານຈະຖືກສະແດງຢູ່ບ່ອນນີ້.</string>
 
+    <!-- No Private Tabs Message Description -->
+    <string name="no_private_tabs_description">ແທັບສ່ວນຕົວຂອງທ່ານຈະຖືກສະແດງຢູ່ບ່ອນນີ້.</string>
+
+    <!-- About content. The first parameter is the name of the application. (For example: Fenix) -->
+    <string name="about_content">%1$s ແມ່ນຜະລິດຂື້ນໂດຍ Mozilla.</string>
+
     <!-- Private Browsing -->
     <!-- Title for private session option -->
     <string name="private_browsing_title">ທ່ານກຳລັງຢູ່ໃນເຊສສັນສ່ວນຕົວ</string>
@@ -25,17 +31,31 @@
     <!-- Delete session button to erase your history in a private session -->
     <string name="private_browsing_delete_session">ລົບເຊສສັນ</string>
 
+    <!-- Private mode shortcut "contextual feature recommendation" (CFR) -->
+    <!-- Text for the main message -->
+    <string name="cfr_message">ເພີ່ມທາງລັດເພື່ອເປີດແຖບສ່ວນຕົວຈາກໜ້າຈໍຫລັກຂອງທ່ານ.</string>
     <!-- Text for the positive button -->
     <string name="cfr_pos_button_text">ເພີ່ມທາງລັດ</string>
     <!-- Text for the negative button -->
     <string name="cfr_neg_button_text">ບໍ່, ຂອບໃຈ</string>
 
+    <!-- Search widget "contextual feature recommendation" (CFR) -->
+    <!-- Text for the main message. 'Firefox' intentionally hardcoded here.-->
+    <string name="search_widget_cfr_message">ເຂົ້າ Firefox ໄດ້ໄວຂຶ້ນ. ເພີ່ມ widget ໃສ່ໜ້າຈໍຫລັກຂອງທ່ານ.</string>
+    <!-- Text for the positive button -->
+    <string name="search_widget_cfr_pos_button_text">ເພີ່ມ widget</string>
+    <!-- Text for the negative button -->
+    <string name="search_widget_cfr_neg_button_text">ບໍ່ແມ່ນຕອນນີ້</string>
+
     <!-- Home screen icons - Long press shortcuts -->
     <!-- Shortcut action to open new tab -->
     <string name="home_screen_shortcut_open_new_tab_2">ແທັບໃຫມ່</string>
     <!-- Shortcut action to open new private tab -->
     <string name="home_screen_shortcut_open_new_private_tab_2">ແທັບສ່ວນຕົວໃຫມ່</string>
 
+    <!-- Heading for the Top Sites block -->
+    <string name="home_screen_top_sites_heading">ເວັບໄຊທຍອດນິຍົມ</string>
+
     <!-- Browser Fragment -->
     <!-- Content description (not visible, for screen readers etc.): Navigate to open tabs -->
     <string name="browser_tabs_button">ເປີດແທັບ</string>
@@ -53,7 +73,7 @@
     <!-- Content description (not visible, for screen readers etc.): Un-bookmark the current page -->
     <string name="browser_menu_edit_bookmark">ແກ້ໄຂບຸກມາກ</string>
     <!-- Browser menu button that opens the addon manager -->
-    <string name="browser_menu_addon_manager">ຕົວຈັດການ Add-ons</string>
+    <string name="browser_menu_add_ons">Add-ons</string>
     <!-- Text displayed when there are no add-ons to be shown -->
     <string name="no_add_ons">ບໍ່ມີ add-ons ຢູ່ທີ່ນີ້</string>
     <!-- Browser menu button that sends a user to help articles -->
@@ -63,13 +83,15 @@
     <!-- Browser menu button that opens the settings menu -->
     <string name="browser_menu_settings">ການຕັ້ງຄ່າ</string>
     <!-- Browser menu button that opens a user's library -->
-    <string name="browser_menu_your_library">ຫ້ອງສະຫມຸດຂອງທ່ານ</string>
+    <string name="browser_menu_library">ຄັງເກັບມ້ຽນ</string>
     <!-- Browser menu toggle that requests a desktop site -->
     <string name="browser_menu_desktop_site">ໂຫມດເດັກສທັອບ</string>
     <!-- Browser menu toggle that adds a shortcut to the site on the device home screen. -->
     <string name="browser_menu_add_to_homescreen">ເພີ່ມເຂົ້າໄປຫນ້າທຳອິດ</string>
     <!-- Browser menu toggle that installs a Progressive Web App shortcut to the site on the device home screen. -->
     <string name="browser_menu_install_on_homescreen">ຕິດຕັ້ງ</string>
+    <!-- Menu option on the toolbar that takes you to synced tabs page-->
+    <string name="synced_tabs">ແທັບທີ່ Sync ແລ້ວ</string>
     <!-- Browser menu button that opens the find in page menu -->
     <string name="browser_menu_find_in_page">ຄົ້ນຫາໃນຫນ້ານີ້</string>
     <!-- Browser menu button that creates a private tab -->
@@ -231,10 +253,6 @@
     <string name="sync_last_synced_summary">Sync ຄັ້ງຫລ້າສຸດ: %s</string>
     <!-- Label summary showing never synced -->
     <string name="sync_never_synced_summary">Sync ຄັ້ງຫລ່າສຸດ: ບໍ່ເຄີຍ</string>
-    <!-- Text for displaying the default device name.
-        The first parameter is the application name, the second is the device manufacturer name
-        and the third is the device model. -->
-    <string name="default_device_name">%s ໃນ %s %s</string>
 
     <!-- Send Tab -->
     <!-- Name of the "receive tabs" notification channel. Displayed in the "App notifications" system settings for the app -->
@@ -321,8 +339,6 @@
     <string name="library_reading_list">ລາຍການອ່ານ</string>
     <!-- Menu Item Label for Search in Library -->
     <string name="library_search">ຄົ້ນຫາ</string>
-    <!-- Library Page Title -->
-    <string name="library_title">ຫ້ອງສະໝຸດ</string>
     <!-- Settings Page Title -->
     <string name="settings_title">ການຕັ້ງຄ່າ</string>
     <!-- Content description (not visible, for screen readers etc.): "Close button for library settings" -->
diff --git a/app/src/main/res/values-lt/strings.xml b/app/src/main/res/values-lt/strings.xml
index eb3af24d5..85328c100 100644
--- a/app/src/main/res/values-lt/strings.xml
+++ b/app/src/main/res/values-lt/strings.xml
@@ -94,6 +94,8 @@
     <string name="browser_menu_add_to_homescreen">Įtraukti į pradžios ekraną</string>
     <!-- Browser menu toggle that installs a Progressive Web App shortcut to the site on the device home screen. -->
     <string name="browser_menu_install_on_homescreen">Įdiegti</string>
+    <!-- Menu option on the toolbar that takes you to synced tabs page-->
+    <string name="synced_tabs">Sinchronizuotos kortelės</string>
     <!-- Browser menu button that opens the find in page menu -->
     <string name="browser_menu_find_in_page">Rasti tinklalapyje</string>
     <!-- Browser menu button that creates a private tab -->
@@ -292,6 +294,8 @@
     <string name="preferences_sync_bookmarks">Adresynas</string>
     <!-- Preference for syncing logins -->
     <string name="preferences_sync_logins">Prisijungimai</string>
+    <!-- Preference for syncing tabs -->
+    <string name="preferences_sync_tabs">Kortelės</string>
     <!-- Preference for signing out -->
     <string name="preferences_sign_out">Atsijungti</string>
     <!-- Preference displays and allows changing current FxA device name -->
@@ -427,6 +431,8 @@
     <string name="library_desktop_bookmarks_unfiled">Kiti adresai</string>
     <!-- Option in Library to open History page -->
     <string name="library_history">Žurnalas</string>
+    <!-- Option in Library to open Synced Tabs page -->
+    <string name="library_synced_tabs">Sinchronizuotos kortelės</string>
     <!-- Option in Library to open Reading List -->
     <string name="library_reading_list">Skaitinių sąrašas</string>
     <!-- Menu Item Label for Search in Library -->
@@ -957,6 +963,8 @@
     <string name="onboarding_tracking_protection_standard_button_description">Blokuoja mažiau stebėjimo elementų, tačiau leidžia įprastai įkelti tinklalapius</string>
     <!-- text for tracking protection radio button option for strict level of blocking -->
     <string name="onboarding_tracking_protection_strict_button">Griežta (rekomenduojama)</string>
+    <!-- text for tracking protection radio button option for strict level of blocking -->
+    <string name="onboarding_tracking_protection_strict_option">Griežta</string>
     <!-- text for strict blocking option button description -->
     <string name="onboarding_tracking_protection_strict_button_description">Blokuoja daugiau stebėjimo elementų dėl geresnės apsaugos ir našumo, tačiau gali sutrikti kai kurių svetainių veikimas</string>
     <!-- text for the toolbar position card header
@@ -1411,4 +1419,15 @@
     <string name="voice_search_content_description">Paieška balsu</string>
     <!-- Voice search prompt description displayed after the user presses the voice search button -->
     <string name="voice_search_explainer">Kalbėkite dabar</string>
+
+    <!-- Synced Tabs -->
+    <!-- Text displayed when user is not logged into a Firefox Account -->
+    <string name="synced_tabs_connect_to_sync_account">Prisijunkite su „Firefox“ paskyra.</string>
+    <!-- Text displayed to ask user to connect another device as no devices found with account -->
+    <string name="synced_tabs_connect_another_device">Susiekite kitą įrenginį.</string>
+    <!-- Text displayed asking user to re-authenticate -->
+    <string name="synced_tabs_reauth">Prisijunkite iš naujo.</string>
+    <!-- Text displayed when user has disabled tab syncing in Firefox Sync Account -->
+    <string name="synced_tabs_enable_tab_syncing">Įjunkite kortelių sinchronizavimą.</string>
+
 </resources>
diff --git a/app/src/main/res/values-nl/strings.xml b/app/src/main/res/values-nl/strings.xml
index 01bb052e8..255c92769 100644
--- a/app/src/main/res/values-nl/strings.xml
+++ b/app/src/main/res/values-nl/strings.xml
@@ -99,6 +99,8 @@
     <string name="browser_menu_add_to_homescreen">Toevoegen aan startscherm</string>
     <!-- Browser menu toggle that installs a Progressive Web App shortcut to the site on the device home screen. -->
     <string name="browser_menu_install_on_homescreen">Installeren</string>
+    <!-- Menu option on the toolbar that takes you to synced tabs page-->
+    <string name="synced_tabs">Gesynchroniseerde tabbladen</string>
     <!-- Browser menu button that opens the find in page menu -->
     <string name="browser_menu_find_in_page">Zoeken op pagina</string>
     <!-- Browser menu button that creates a private tab -->
@@ -297,6 +299,8 @@
     <string name="preferences_sync_bookmarks">Bladwijzers</string>
     <!-- Preference for syncing logins -->
     <string name="preferences_sync_logins">Aanmeldingen</string>
+    <!-- Preference for syncing tabs -->
+    <string name="preferences_sync_tabs">Tabbladen</string>
     <!-- Preference for signing out -->
     <string name="preferences_sign_out">Afmelden</string>
     <!-- Preference displays and allows changing current FxA device name -->
@@ -428,6 +432,8 @@
     <string name="library_desktop_bookmarks_unfiled">Andere bladwijzers</string>
     <!-- Option in Library to open History page -->
     <string name="library_history">Geschiedenis</string>
+    <!-- Option in Library to open Synced Tabs page -->
+    <string name="library_synced_tabs">Gesynchroniseerde tabbladen</string>
     <!-- Option in Library to open Reading List -->
     <string name="library_reading_list">Leeslijst</string>
 
@@ -957,6 +963,8 @@
     <string name="onboarding_tracking_protection_standard_button_description">Blokkeert minder trackers, maar staat toe dat pagina’s normaal worden geladen</string>
     <!-- text for tracking protection radio button option for strict level of blocking -->
     <string name="onboarding_tracking_protection_strict_button">Streng (aanbevolen)</string>
+    <!-- text for tracking protection radio button option for strict level of blocking -->
+    <string name="onboarding_tracking_protection_strict_option">Streng</string>
     <!-- text for strict blocking option button description -->
     <string name="onboarding_tracking_protection_strict_button_description">Blokkeert meer trackers voor betere bescherming en prestaties, maar kan ervoor zorgen dat sommige websites niet goed werken</string>
     <!-- text for the toolbar position card header
@@ -1405,4 +1413,5 @@
     <string name="voice_search_content_description">Gesproken zoekopdracht</string>
     <!-- Voice search prompt description displayed after the user presses the voice search button -->
     <string name="voice_search_explainer">Nu spreken</string>
-</resources>
+
+    </resources>
diff --git a/app/src/main/res/values-sr/strings.xml b/app/src/main/res/values-sr/strings.xml
index c0dfd514d..02d790bad 100644
--- a/app/src/main/res/values-sr/strings.xml
+++ b/app/src/main/res/values-sr/strings.xml
@@ -93,6 +93,8 @@
     <string name="browser_menu_add_to_homescreen">Додај на почетни екран</string>
     <!-- Browser menu toggle that installs a Progressive Web App shortcut to the site on the device home screen. -->
     <string name="browser_menu_install_on_homescreen">Инсталирај</string>
+    <!-- Menu option on the toolbar that takes you to synced tabs page-->
+    <string name="synced_tabs">Синхронизовани језичци</string>
     <!-- Browser menu button that opens the find in page menu -->
     <string name="browser_menu_find_in_page">Нађи на страници</string>
     <!-- Browser menu button that creates a private tab -->
@@ -289,6 +291,8 @@
     <string name="preferences_sync_bookmarks">Забелешке</string>
     <!-- Preference for syncing logins -->
     <string name="preferences_sync_logins">Пријаве</string>
+    <!-- Preference for syncing tabs -->
+    <string name="preferences_sync_tabs">Језичци</string>
     <!-- Preference for signing out -->
     <string name="preferences_sign_out">Одјава</string>
     <!-- Preference displays and allows changing current FxA device name -->
@@ -423,6 +427,8 @@
     <string name="library_desktop_bookmarks_unfiled">Остале забелешке</string>
     <!-- Option in Library to open History page -->
     <string name="library_history">Историјат</string>
+    <!-- Option in Library to open Synced Tabs page -->
+    <string name="library_synced_tabs">Синхронизовани језичци</string>
     <!-- Option in Library to open Reading List -->
     <string name="library_reading_list">Списак за читање</string>
     <!-- Menu Item Label for Search in Library -->
@@ -949,6 +955,8 @@
     <string name="onboarding_tracking_protection_standard_button_description">Блокира мање пратилаца а омогућава нормално учитавање страница</string>
     <!-- text for tracking protection radio button option for strict level of blocking -->
     <string name="onboarding_tracking_protection_strict_button">Строго (препоручено)</string>
+    <!-- text for tracking protection radio button option for strict level of blocking -->
+    <string name="onboarding_tracking_protection_strict_option">Строго</string>
     <!-- text for strict blocking option button description -->
     <string name="onboarding_tracking_protection_strict_button_description">Блокира више пратилаца и пружа бољу заштиту и перформансе, али може проузроковати неправилан рад неких веб страница</string>
     <!-- text for the toolbar position card header
@@ -1400,4 +1408,15 @@
     <string name="voice_search_content_description">Гласовна претрага</string>
     <!-- Voice search prompt description displayed after the user presses the voice search button -->
     <string name="voice_search_explainer">Сада говорите</string>
+
+    <!-- Synced Tabs -->
+    <!-- Text displayed when user is not logged into a Firefox Account -->
+    <string name="synced_tabs_connect_to_sync_account">Повежите са Firefox налогом.</string>
+    <!-- Text displayed to ask user to connect another device as no devices found with account -->
+    <string name="synced_tabs_connect_another_device">Повежите други уређај.</string>
+    <!-- Text displayed asking user to re-authenticate -->
+    <string name="synced_tabs_reauth">Поново потврдите идентитет.</string>
+    <!-- Text displayed when user has disabled tab syncing in Firefox Sync Account -->
+    <string name="synced_tabs_enable_tab_syncing">Омогућите синхронизацију језичака.</string>
+
 </resources>
diff --git a/app/src/main/res/values-th/strings.xml b/app/src/main/res/values-th/strings.xml
index 3e15a0ce7..8dd6ac70b 100644
--- a/app/src/main/res/values-th/strings.xml
+++ b/app/src/main/res/values-th/strings.xml
@@ -32,7 +32,7 @@
     <!-- Delete session button to erase your history in a private session -->
     <string name="private_browsing_delete_session">ลบวาระ</string>
 
-    <!-- Private mode shortcut "contextual feature recommender" (CFR) -->
+    <!-- Private mode shortcut "contextual feature recommendation" (CFR) -->
     <!-- Text for the main message -->
     <string name="cfr_message">เพิ่มทางลัดเพื่อเปิดแท็บส่วนตัวจากหน้าจอหลักของคุณ</string>
     <!-- Text for the positive button -->
@@ -212,6 +212,12 @@
     <string name="preferences_add_private_browsing_shortcut">เพิ่มทางลัดการเรียกดูแบบส่วนตัว</string>
     <!-- Preference for accessibility -->
     <string name="preferences_accessibility">การช่วยเข้าถึง</string>
+    <!-- Preference to override the Firefox Account server -->
+    <string name="preferences_override_fxa_server">เซิร์ฟเวอร์บัญชี Firefox ที่กำหนดเอง</string>
+    <!-- Preference to override the Sync token server -->
+    <string name="preferences_override_sync_tokenserver">เซิร์ฟเวอร์ Sync ที่กำหนดเอง</string>
+    <!-- Toast shown after updating the FxA/Sync server override preferences -->
+    <string name="toast_override_fxa_sync_server_done">เปลี่ยนแปลงเซิร์ฟเวอร์บัญชี Firefox/Sync แล้ว กำลังออกจากแอปพลิเคชันเพื่อนำการเปลี่ยนแปลงไปใช้…</string>
     <!-- Preference category for account information -->
     <string name="preferences_category_account">บัญชี</string>
     <!-- Preference shown on banner to sign into account -->
@@ -288,6 +294,11 @@
     <!-- Label summary showing never synced -->
     <string name="sync_never_synced_summary">ซิงค์ล่าสุด: ไม่เคย</string>
 
+    <!-- Text for displaying the default device name.
+        The first parameter is the application name, the second is the device manufacturer name
+        and the third is the device model. -->
+    <string name="default_device_name_2">%1$s บน %2$s %3$s</string>
+
     <!-- Send Tab -->
     <!-- Name of the "receive tabs" notification channel. Displayed in the "App notifications" system settings for the app -->
     <string name="fxa_received_tab_channel_name">แท็บที่ได้รับ</string>
@@ -355,9 +366,6 @@
     <!-- Preference for removing FxA account -->
     <string name="preferences_sync_remove_account">เอาบัญชีออก</string>
 
-    <!-- Pairing Feature strings -->
-    <!-- Instructions on how to access pairing -->
-    <string name="pair_instructions"><![CDATA[เยี่ยมชม <b>firefox.com/pair</b> ใน Firefox บนคอมพิวเตอร์ของคุณเพื่อรับรหัส QR ของคุณ]]></string>
     <!-- Button to open camera for pairing -->
     <string name="pair_open_camera">เปิดกล้อง</string>
     <!-- Button to cancel pairing -->
@@ -455,6 +463,9 @@
     <!-- Text for the menu button to remove a top site -->
     <string name="remove_top_site">เอาออก</string>
 
+    <!-- Postfix for private WebApp titles, placeholder is replaced with app name -->
+    <string name="pwa_site_controls_title_private">%1$s (โหมดส่วนตัว)</string>
+
     <!-- History -->
     <!-- Text for the button to clear all history -->
     <string name="history_delete_all">ลบประวัติ</string>
@@ -787,8 +798,6 @@
     <!-- Title for Accessibility Text Size Scaling Preference -->
     <string name="preference_accessibility_font_size_title">ขนาดแบบอักษร</string>
 
-    <!-- Title for Accessibility Text Automatic Size Scaling Preference -->
-    <string name="preference_accessibility_auto_size">การปรับขนาดแบบอักษรโดยอัตโนมัติ</string>
     <!-- Summary for Accessibility Text Automatic Size Scaling Preference -->
     <string name="preference_accessibility_auto_size_summary">ขนาดแบบอักษรจะตรงกับการตั้งค่า Android ของคุณ ปิดใช้งานเพื่อจัดการขนาดแบบอักษรที่นี่</string>
 
@@ -796,7 +805,7 @@
     <string name="preferences_delete_browsing_data">ลบข้อมูลการเรียกดู</string>
 
     <!-- Title for the tabs item in Delete browsing data -->
-    <string name="preferences_delete_browsing_data_tabs_title">แท็บที่เปิด</string>
+    <string name="preferences_delete_browsing_data_tabs_title_2">แท็บที่เปิด</string>
     <!-- Subtitle for the tabs item in Delete browsing data, parameter will be replaced with the number of open tabs -->
     <string name="preferences_delete_browsing_data_tabs_subtitle">%d แท็บ</string>
     <!-- Title for the data and history items in Delete browsing data -->
@@ -846,13 +855,25 @@
     <!-- Text for the snackbar to show the user that the deletion of browsing data is in progress -->
     <string name="deleting_browsing_data_in_progress">กำลังลบข้อมูลการเรียกดู…</string>
 
+    <!-- text for firefox preview moving tip description -->
+    <string name="tip_firefox_preview_moved_description">Firefox Nightly อัปเดตทุกคืนและมีลูกเล่นใหม่ ๆ ทุกคืน
+        อย่างไรก็ตามความเสถียรอาจลดลง ดาวน์โหลดเบราว์เซอร์เบต้าของเราเพื่อประสบการณ์ที่เสถียรยิ่งขึ้น</string>
+    <!-- text for firefox preview moving tip button. "Mozilla Firefox Browser" is intentionally hardcoded -->
+    <string name="tip_firefox_preview_moved_button">รับ Mozilla Firefox เบราว์เซอร์</string>
+
     <!-- text for firefox preview moving tip header. "Firefox Nightly" is intentionally hardcoded -->
     <string name="tip_firefox_preview_moved_header_preview_installed">Firefox Nightly ย้ายไปแล้ว</string>
+    <!-- text for firefox preview moving tip description -->
+    <string name="tip_firefox_preview_moved_description_preview_installed">แอพนี้จะไม่ได้รับการอัปเดตด้านความปลอดภัยอีกต่อไป หยุดใช้งานแอปนี้และเปลี่ยนเป็น Nightly ตัวใหม่
+        \n\nหากต้องการโอนที่คั่นหน้า การเข้าสู่ระบบ และประวัติการท่องของตุณไปยังแอปอื่นให้สร้างบัญชี Firefox ขึ้นมา</string>
     <!-- text for firefox preview moving tip button  -->
     <string name="tip_firefox_preview_moved_button_preview_installed">โยกไปใช้ Nightly ตัวใหม่</string>
 
     <!-- text for firefox preview moving tip header. "Firefox Nightly" is intentionally hardcoded -->
     <string name="tip_firefox_preview_moved_header_preview_not_installed">Firefox Nightly ได้ย้ายไปแล้ว</string>
+    <!-- text for firefox preview moving tip description -->
+    <string name="tip_firefox_preview_moved_description_preview_not_installed">แอพนี้จะไม่ได้รับการอัปเดตความปลอดภัยอีกต่อไป รับ Nightly ใหม่และหยุดใช้แอปนี้
+        \n\nหากต้องการโอนที่คั่นหน้า การเข้าสู่ระบบ และประวัติการท่องของคุณไปยังแอปอื่นให้สร้างบัญชี Firefox ขึ้นมา</string>
     <!-- text for firefox preview moving tip button  -->
     <string name="tip_firefox_preview_moved_button_preview_not_installed">รับ Nightly ตัวใหม่</string>
 
@@ -969,6 +990,8 @@
     <string name="sign_in_with_email">ใช้อีเมลแทน</string>
     <!-- Text shown in confirmation dialog to sign out of account -->
     <string name="sign_out_confirmation_message">Firefox จะหยุดการซิงค์กับบัญชีของคุณ แต่จะไม่ลบข้อมูลการเรียกดูใด ๆ ของคุณบนอุปกรณ์นี้</string>
+    <!-- Text shown in confirmation dialog to sign out of account. The first parameter is the name of the app (e.g. Firefox Preview) -->
+    <string name="sign_out_confirmation_message_2">%s จะหยุดซิงค์กับบัญชีของคุณ แต่จะไม่ลบข้อมูลการท่องเว็บใด ๆ ของคุณบนอุปกรณ์นี้</string>
     <!-- Option to continue signing out of account shown in confirmation dialog to sign out of account -->
     <string name="sign_out_disconnect">ตัดการเชื่อมต่อ</string>
     <!-- Option to cancel signing out shown in confirmation dialog to sign out of account -->
@@ -1125,6 +1148,9 @@
     <!-- Placeholder text for the TextView in the Add to Homescreen dialog -->
     <string name="add_to_homescreen_text_placeholder">ชื่อทางลัด</string>
 
+    <!-- Describes the add to homescreen functionality -->
+    <string name="add_to_homescreen_description">คุณสามารถเพิ่มเว็บไซต์นี้ลงในหน้าจอหลักของโทรศัพท์ของคุณเพื่อเข้าถึงและเรียกดูได้เร็วขึ้นด้วยประสบการณ์ที่เหมือนแอป</string>
+
     <!-- Preference for managing the settings for logins and passwords in Fenix -->
     <string name="preferences_passwords_logins_and_passwords">การเข้าสู่ระบบและรหัสผ่าน</string>
     <!-- Preference for managing the saving of logins and passwords in Fenix -->
@@ -1316,8 +1342,23 @@
     <string name="certificate_info_verified_by">ยืนยันโดย: %1$s</string>
     <!-- Login overflow menu delete button -->
     <string name="login_menu_delete_button">ลบ</string>
+    <!-- Login overflow menu edit button -->
+    <string name="login_menu_edit_button">แก้ไข</string>
     <!-- Message in delete confirmation dialog for logins -->
     <string name="login_deletion_confirmation">คุณแน่ใจหรือไม่ที่ต้องการจะลบการเข้าสู่ระบบนี้?</string>
     <!-- Positive action of a dialog asking to delete  -->
     <string name="dialog_delete_positive">ลบ</string>
+    <!--  The saved login options menu description. -->
+    <string name="login_options_menu">ตัวเลือกการเข้าสู่ระบบ</string>
+    <!--  The button description to discard changes to an edited login. -->
+    <string name="discard_changes">ละทิ้งการเปลี่ยนแปลง</string>
+    <!--  The page title for editing a saved login. -->
+    <string name="edit">แก้ไข</string>
+    <!--  The error message in edit login view when password field is blank. -->
+    <string name="saved_login_password_required">ต้องการรหัสผ่าน</string>
+    <!-- Voice search button content description  -->
+    <string name="voice_search_content_description">ค้นหาด้วยเสียง</string>
+    <!-- Voice search prompt description displayed after the user presses the voice search button -->
+    <string name="voice_search_explainer">พูดเลย</string>
+
     </resources>
diff --git a/app/src/main/res/values-trs/strings.xml b/app/src/main/res/values-trs/strings.xml
index 1ffe315dd..ac3acce1b 100644
--- a/app/src/main/res/values-trs/strings.xml
+++ b/app/src/main/res/values-trs/strings.xml
@@ -30,4 +30,58 @@
     <!-- Title for private session option -->
     <string name="private_browsing_title">Riña \’ngō sesiûn huìi nunt</string>
 
+    <!-- Explanation for private browsing displayed to users on home view when they first enable private mode
+        The first parameter is the name of the app defined in app_name (for example: Fenix) -->
+    <string name="private_browsing_placeholder_description_2">%1$snadure\' nej sa nana\'uî\'t nga gaché nunt riña nej rakïj ñanj huì garâj sunt nan sisī naránt asi gahuīt riña aplikasiûn nan. Nan nī sê sī gāta ruhuaj sisī à\'ngō nādure\'ej sò\' riña nej sîtio asi riña duguî\' dû\'uèj internet, sanī rugûñu\'un da\' \'ngōrïnt gīni\'in sa \'iát ngà aché nunt nī sī ga\'ue gīni\'in a\'ngô guìi ngà\'.</string>
+    <string name="private_browsing_common_myths">Nuguan\' nē huā rayi\'î riña aché nu huì\'</string>
+    <!-- Delete session button to erase your history in a private session -->
+    <string name="private_browsing_delete_session">Nādure\' sesiûn</string>
+
+    <!-- Private mode shortcut "contextual feature recommendation" (CFR) -->
+    <!-- Text for the main message -->
+    <string name="cfr_message">Nūtà\' \'ngō aksêso dirêckto da\' na\'nïnt rakïj ñanj huìi asìj riña pantayâ ayi\'ìt.</string>
+    <!-- Text for the positive button -->
+    <string name="cfr_pos_button_text">Nūtà\' \'ngō aksêso dirêckto</string>
+    <!-- Text for the negative button -->
+    <string name="cfr_neg_button_text">Guruhuât nānj ân</string>
+
+    <!-- Search widget "contextual feature recommendation" (CFR) -->
+    <!-- Text for the main message. 'Firefox' intentionally hardcoded here.-->
+    <string name="search_widget_cfr_message">Gūchì\' hìo doj riña Firefox. Nūtà\' \'ngō widget riña pantayâ ayi\'ìt.</string>
+    <!-- Text for the positive button -->
+    <string name="search_widget_cfr_pos_button_text">Nūtà\' widget</string>
+    <!-- Text for the negative button -->
+    <string name="search_widget_cfr_neg_button_text">Sī ga\'ue akuan\' nïn</string>
+
+    <!-- Home screen icons - Long press shortcuts -->
+    <!-- Shortcut action to open new tab -->
+    <string name="home_screen_shortcut_open_new_tab_2">Rakïj ñanj nakàa</string>
+    <!-- Shortcut action to open new private tab -->
+    <string name="home_screen_shortcut_open_new_private_tab_2">Rakïj ñaj nakà gārasun \'ngō rïn\'</string>
+    <!-- Heading for the Top Sites block -->
+    <string name="home_screen_top_sites_heading">Hiūj ni\'iāj yītïnj rè\'</string>
+
+    <!-- Browser Fragment -->
+    <!-- Content description (not visible, for screen readers etc.): Navigate to open tabs -->
+    <string name="browser_tabs_button">Nej Rakïj ñanj huā nî\'nïnj ïn</string>
+    <!-- Content description (not visible, for screen readers etc.): Navigate backward (browsing history) -->
+    <string name="browser_menu_back">Ne\' rukùu</string>
+    <!-- Content description (not visible, for screen readers etc.): Navigate forward (browsing history) -->
+    <string name="browser_menu_forward">Ne\' ñāan</string>
+    <!-- Content description (not visible, for screen readers etc.): Refresh current website -->
+    <string name="browser_menu_refresh">Nāgi\'iaj nākà</string>
+    <!-- Content description (not visible, for screen readers etc.): Stop loading current website -->
+    <string name="browser_menu_stop">Gānikïn\'</string>
+    <!-- Content description (not visible, for screen readers etc.): Bookmark the current page -->
+    <string name="browser_menu_bookmark">Sa arâj sun nīchrò\' doj</string>
+    <!-- Content description (not visible, for screen readers etc.): Un-bookmark the current page -->
+    <string name="browser_menu_edit_bookmark">Nādūnā sa arâj sun nīchrò\' doj</string>
+
+    <!-- Browser menu button that opens the addon manager -->
+    <string name="browser_menu_add_ons">Sa gā\'ue nūtò\'</string>
+    <!-- Text displayed when there are no add-ons to be shown -->
+    <string name="no_add_ons">Nitāj sa gā\'ue nūtò\' mân hiūj nan</string>
+    <!-- Browser menu button that sends a user to help articles -->
+    <string name="browser_menu_help">Sa rūgûñu\'ūnj un</string>
+
     </resources>