diff --git a/l10n b/l10n
index 0d64a530f..fb2f27225 160000
--- a/l10n
+++ b/l10n
@@ -1 +1 @@
-Subproject commit 0d64a530f4f72ad19e508097a508fc8ef1ad7ede
+Subproject commit fb2f27225e6ec810354ce4c95913d6a2105e200b
diff --git a/src/browser/base/content/ZenStartup.mjs b/src/browser/base/content/ZenStartup.mjs
index 67847f5f4..055bc2eee 100644
--- a/src/browser/base/content/ZenStartup.mjs
+++ b/src/browser/base/content/ZenStartup.mjs
@@ -33,6 +33,8 @@
 
         this._initSidebarScrolling();
 
+        gZenUIMigration.init();
+
         gZenCompactModeManager.init();
         ZenWorkspaces.init();
         gZenVerticalTabsManager.init();
diff --git a/src/browser/base/content/browser-init-js.patch b/src/browser/base/content/browser-init-js.patch
index 3d3d188ed..a604b8ef9 100644
--- a/src/browser/base/content/browser-init-js.patch
+++ b/src/browser/base/content/browser-init-js.patch
@@ -1,11 +1,11 @@
 diff --git a/browser/base/content/browser-init.js b/browser/base/content/browser-init.js
-index 9df41bb3c82919839ee1408aa4d177ea7ee40a56..e37c64fa2c2ea39762be4285a1a7055463ded537 100644
+index 63100defacf66c6b3232b9e0a783a5fd14e3a46a..eb7ed966628a595847b850f981418d425b78f14b 100644
 --- a/browser/base/content/browser-init.js
 +++ b/browser/base/content/browser-init.js
-@@ -152,13 +152,15 @@ var gBrowserInit = {
-        elem.setAttribute("skipintoolbarset", "true");
-      }
-    }
+@@ -162,13 +162,15 @@ var gBrowserInit = {
+         elem.setAttribute("skipintoolbarset", "true");
+       }
+     }
 +    ZenCustomizableUI.init(window);
      for (let area of CustomizableUI.areas) {
        let type = CustomizableUI.getAreaType(area);
@@ -16,14 +16,15 @@ index 9df41bb3c82919839ee1408aa4d177ea7ee40a56..e37c64fa2c2ea39762be4285a1a70554
        }
      }
 +    ZenCustomizableUI.registerToolbarNodes(window);
-    if (isVerticalTabs) {
-      // Show the vertical tabs toolbar
-      setToolbarVisibility(
-@@ -253,6 +255,10 @@ var gBrowserInit = {
+     if (isVerticalTabs) {
+       // Show the vertical tabs toolbar
+       setToolbarVisibility(
+@@ -287,6 +289,11 @@ var gBrowserInit = {
      gPrivateBrowsingUI.init();
      BrowserSearch.init();
      BrowserPageActions.init();
 +
++Services.scriptloader.loadSubScript("chrome://browser/content/zen-components/ZenUIMigration.mjs", window);
 +Services.scriptloader.loadSubScript("chrome://browser/content/ZenStartup.mjs", window);
 +Services.scriptloader.loadSubScript("chrome://browser/content/zenThemeModifier.js", window);
 +
diff --git a/src/browser/base/content/zen-assets.jar.inc.mn b/src/browser/base/content/zen-assets.jar.inc.mn
index 69b4c1c56..563908e14 100644
--- a/src/browser/base/content/zen-assets.jar.inc.mn
+++ b/src/browser/base/content/zen-assets.jar.inc.mn
@@ -4,6 +4,7 @@
         content/browser/ZenStartup.mjs                          (content/ZenStartup.mjs)
         content/browser/ZenUIManager.mjs                        (content/ZenUIManager.mjs)
         content/browser/ZenCustomizableUI.sys.mjs               (content/ZenCustomizableUI.sys.mjs)
+        content/browser/zen-components/ZenUIMigration.mjs       (zen-components/ZenUIMigration.mjs)
         content/browser/zen-components/ZenCompactMode.mjs       (zen-components/ZenCompactMode.mjs)
         content/browser/zen-components/ZenViewSplitter.mjs      (zen-components/ZenViewSplitter.mjs)
         content/browser/zen-components/ZenThemesCommon.mjs      (zen-components/ZenThemesCommon.mjs)
diff --git a/src/browser/base/zen-components/ZenUIMigration.mjs b/src/browser/base/zen-components/ZenUIMigration.mjs
new file mode 100644
index 000000000..b93d6f267
--- /dev/null
+++ b/src/browser/base/zen-components/ZenUIMigration.mjs
@@ -0,0 +1,61 @@
+
+{
+  const PREF_NAME = "zen.migration.version";
+  const MIGRATION_VERSION = 1;
+
+  class ZenUIMigration {
+    init() {
+      if (Services.prefs.prefHasUserValue(PREF_NAME)) {
+        this._migrate();
+      }
+      this.clearVariables();
+    }
+
+    get _migrationVersion() {
+      return Services.prefs.getIntPref(PREF_NAME, 0);
+    }
+
+    set _migrationVersion(value) {
+      Services.prefs.setIntPref(PREF_NAME, value);
+    }
+
+    _migrate() {
+      if (this._migrationVersion < 1) {
+        this._migrateV1();
+      }
+    }
+
+    clearVariables() {
+      this._migrationVersion = MIGRATION_VERSION;
+      window.gZenUIMigration = null;
+    }
+
+    async _migrateV1() {
+      // Introduction of the new URL bar, show a message to the user
+      const notification = gNotificationBox.appendNotification(
+        'zen-new-urlbar-notification',
+        {
+          label: { 'l10n-id': 'zen-new-urlbar-notification' },
+          image: 'chrome://browser/skin/notification-icons/persistent-storage-blocked.svg',
+          priority: gNotificationBox.PRIORITY_WARNING_HIGH,
+        },
+        [
+          {
+            'l10n-id': 'zen-disable',
+            accessKey: 'D',
+            callback: () => {
+              Services.prefs.setBoolPref('zen.urlbar.replace-newtab', false);
+            },
+          },
+          {
+            link: "https://docs.zen-browser.app/user-manual/urlbar/",
+            'l10n-id': "zen-learn-more-text",
+          }
+        ],
+      );
+      notification.persistence = -1;
+    }
+  }
+
+  window.gZenUIMigration = new ZenUIMigration();
+}