diff --git a/addons/message_update_v2.24/manifest.json b/addons/message_update_v2.24/manifest.json
deleted file mode 100644
index c82f6310b8..0000000000
--- a/addons/message_update_v2.24/manifest.json
+++ /dev/null
@@ -1,53 +0,0 @@
-{
-  "api_version": "0.1",
-  "id": "message_update_v2.24",
-  "name": "Update to Mozilla VPN 2.24",
-  "type": "message",
-  "conditions": {
-    "max_client_version": "2.23.9",
-    "javascript": "osCheck.js"
-  },
-  "javascript": {
-    "enable": "enable.js"
-  },
-  "message": {
-    "date": 1722476590,
-    "id": "message_update_v2.24",
-    "title": "Update to Mozilla VPN 2.24",
-    "subtitle": "We’ve released an updated version of Mozilla VPN! Update to the latest version for the best possible Mozilla VPN experience.",
-    "badge": "new_update",
-    "blocks": [
-      {
-        "id": "c_1-2",
-        "type": "text",
-        "content": "This update includes minor bug fixes, UI adjustments and other performance improvements."
-      },
-      {
-        "id": "c_3",
-        "type": "button",
-        "style": "primary",
-        "content": "Update now",
-        "javascript": "update.js"
-      },
-      {
-        "id": "c_4",
-        "type": "button",
-        "style": "primary",
-        "content": "Download update",
-        "javascript": "updateWeb.js"
-      },
-      {
-        "id": "c_5",
-        "type": "button",
-        "style": "link",
-        "content": "Get help",
-        "javascript": "getHelp.js"
-      },
-      {
-        "id": "extra_1",
-        "type": "text",
-        "content": "Download the new Mozilla VPN 2.24"
-      }
-    ]
-  }
-}
diff --git a/addons/message_update_v2.24/enable.js b/addons/message_update_v2.25/enable.js
similarity index 92%
rename from addons/message_update_v2.24/enable.js
rename to addons/message_update_v2.25/enable.js
index 0a2328b488..9b014df684 100644
--- a/addons/message_update_v2.24/enable.js
+++ b/addons/message_update_v2.25/enable.js
@@ -10,7 +10,7 @@ if (('updateTime' in api.settings)) {
 // Macos v2.16.0 requires a web-based update.
 if (api.env.platform === 'macos' && api.env.versionString === '2.16.0') {
   api.addon.setTitle(
-      'message.message_update_v2.24.block.extra_1',
+      'message.message_update_v2.25.block.extra_1',
       'Download the new Mozilla VPN');
   api.addon.composer.remove('c_3');
   return;
@@ -51,6 +51,6 @@ if (versionCompare([2, 13, 0], version) >= 0 ||
 api.addon.composer.remove('c_3');
 
 api.addon.setTitle(
-    'message.message_update_v2.24.block.extra_1',
+    'message.message_update_v2.25.block.extra_1',
     'Download the new Mozilla VPN');
 })
diff --git a/addons/message_update_v2.24/getHelp.js b/addons/message_update_v2.25/getHelp.js
similarity index 100%
rename from addons/message_update_v2.24/getHelp.js
rename to addons/message_update_v2.25/getHelp.js
diff --git a/addons/message_update_v2.25/manifest.json b/addons/message_update_v2.25/manifest.json
new file mode 100644
index 0000000000..b80c305ade
--- /dev/null
+++ b/addons/message_update_v2.25/manifest.json
@@ -0,0 +1,69 @@
+{
+  "api_version": "0.1",
+  "id": "message_update_v2.25",
+  "name": "Update to Mozilla VPN 2.25",
+  "type": "message",
+  "conditions": {
+    "max_client_version": "2.24.9",
+    "javascript": "osCheck.js"
+  },
+  "javascript": {
+    "enable": "enable.js"
+  },
+  "message": {
+    "date": 1733763600,
+    "usesSharedStrings": true,
+    "shortVersion": "2.25",
+    "id": "message_update_v2.25",
+    "title": "vpn.commonStrings.updateTitle",
+    "subtitle": "vpn.commonStrings.subtitle",
+    "badge": "new_update",
+    "blocks": [
+      {
+        "id": "c_1",
+        "type": "text",
+        "content": "vpn.commonStrings.generalUpdateBulletIntro"
+      },
+      {
+        "id": "c_2",
+        "type": "ulist",
+        "content": [
+          {
+            "id": "l_1",
+            "content": "vpn.225updateMessage.bullet1"
+          },
+          {
+            "id": "l_2",
+            "content": "vpn.225updateMessage.bullet2"
+          }
+        ]
+      },
+      {
+        "id": "c_3",
+        "type": "button",
+        "style": "primary",
+        "content": "vpn.commonStrings.updateButton",
+        "javascript": "update.js"
+      },
+      {
+        "id": "c_4",
+        "type": "button",
+        "style": "primary",
+        "content": "vpn.commonStrings.downloadButton",
+        "javascript": "updateWeb.js"
+      },
+      {
+        "id": "c_5",
+        "type": "button",
+        "style": "link",
+        "content": "vpn.commonStrings.getHelpButton",
+        "javascript": "getHelp.js"
+      },
+      {
+        "id": "extra_1",
+        "type": "text",
+        "content": "vpn.commonStrings.downloadTitle"
+      }
+    ]
+  }
+}
diff --git a/addons/message_update_v2.24/osCheck.js b/addons/message_update_v2.25/osCheck.js
similarity index 100%
rename from addons/message_update_v2.24/osCheck.js
rename to addons/message_update_v2.25/osCheck.js
diff --git a/addons/message_update_v2.24/update.js b/addons/message_update_v2.25/update.js
similarity index 100%
rename from addons/message_update_v2.24/update.js
rename to addons/message_update_v2.25/update.js
diff --git a/addons/message_update_v2.24/updateWeb.js b/addons/message_update_v2.25/updateWeb.js
similarity index 100%
rename from addons/message_update_v2.24/updateWeb.js
rename to addons/message_update_v2.25/updateWeb.js
diff --git a/addons/message_whats_new_v2.25/manifest.json b/addons/message_whats_new_v2.25/manifest.json
new file mode 100644
index 0000000000..234fb0600d
--- /dev/null
+++ b/addons/message_whats_new_v2.25/manifest.json
@@ -0,0 +1,49 @@
+{
+  "api_version": "0.1",
+  "id": "message_whats_new_v2.25",
+  "name": "What's new message",
+  "type": "message",
+  "conditions": {
+    "min_client_version": "2.25.0",
+    "max_client_version": "2.25.9"
+},
+  "javascript": {
+    "enable": "setDate.js"
+  },
+  "message": {
+    "date": 1733763600,
+    "usesSharedStrings": true,
+    "shortVersion": "2.25",
+    "id": "message_whats_new_v2.25",
+    "title": "vpn.commonStrings.whatsNewTitle",
+    "subtitle": "vpn.commonStrings.latestVersionSubtitle",
+    "badge": "whats_new",
+    "notify": false,
+    "blocks": [
+      {
+        "id": "c_1",
+        "type": "text",
+        "content": "vpn.commonStrings.generalUpdateBulletIntro"
+      },
+      {
+        "id": "c_2",
+        "type": "ulist",
+        "content": [
+          {
+            "id": "l_1",
+            "content": "vpn.225updateMessage.bullet1"
+          },
+          {
+            "id": "l_2",
+            "content": "vpn.225updateMessage.bullet2"
+          }
+        ]
+      },
+      {
+        "id": "c_3",
+        "type": "text",
+        "content": "vpn.commonStrings.whatsNewClosing"
+      }
+    ]
+  }
+}
diff --git a/addons/message_whats_new_v2.25/setDate.js b/addons/message_whats_new_v2.25/setDate.js
new file mode 100644
index 0000000000..61416f2412
--- /dev/null
+++ b/addons/message_whats_new_v2.25/setDate.js
@@ -0,0 +1,3 @@
+(function(api) {
+api.addon.date = (api.settings.updateTime.getTime() / 1000);
+})
diff --git a/addons/strings.yaml b/addons/strings.yaml
index b21dde8f41..ca413a2ef9 100644
--- a/addons/strings.yaml
+++ b/addons/strings.yaml
@@ -51,6 +51,9 @@ commonStrings:
   generalUpdateContent:
     value: This update includes minor bug fixes, UI adjustments and other performance improvements.
     comment: Default update notes
+  generalUpdateBulletIntro:
+    value: "This update includes minor bug fixes, UI adjustments and other performance improvements, including:"
+    comment: Default update text before several bullet points with specific updates
   updateButton:
     value: Update now
     comment: Button label
@@ -60,6 +63,23 @@ commonStrings:
   getHelpButton:
     value: Get help
     comment: Button label
+  whatsNewTitle:
+    value: You’ve updated to Mozilla VPN %1
+    comment: Title for What's New message. %1 is replaced by the version number, such as 2.25
+  latestVersionSubtitle:
+    value: You’re using the latest version of Mozilla VPN.
+    comment: Subtitle for default What's New message
+  whatsNewClosing:
+    value: Thank you for installing the latest version!
+    comment: Closing for default What's New message
+
+225updateMessage:
+  bullet1:
+    value: On iOS, enhanced stability and reliability for VPN connections.
+    comment: First bullet point with a specific update in 2.25
+  bullet2:
+    value: On Android, added step-by-step instructions to enable VPN connection on startup.
+    comment: Second bullet point with a specific update in 2.25
 
 tryFirefoxExtension:
   title:
diff --git a/scripts/addon/build.py b/scripts/addon/build.py
index 38d01340bf..6bae503dcc 100755
--- a/scripts/addon/build.py
+++ b/scripts/addon/build.py
@@ -324,11 +324,11 @@ def transform_shared_strings(input_file, output_file, relevant_strings, short_ve
             trans_unit.set('id', string_details['legacy_id'])
 
             # Then, swap in the short version number if needed.
-            # All languages have source, but only non-English langauges have target.
+            # All languages have source, but only non-English languages have target.
             source = trans_unit.find('.//xliff:source', ns)
             source.text = source.text.replace('%1', short_version)
             target = trans_unit.find('.//xliff:target', ns)
-            if type(target) is ET.Element:
+            if type(target) is ET.Element and target.text:
                 target.text = target.text.replace('%1', short_version)
 
     # Write the filtered tree to the output file, creating the folders if needed