chore: update to a more modern flutter version

Author: eseidel

src/content/docs/code-push/ci/codemagic.mdx

@@ -78,12 +78,12 @@ As a preview, our finished `codemagic.yaml` file will look like this:
 definitions:
   environment:
     shared_env: &shared_env
-      flutter: 3.24.1
+      flutter: 3.38.9
       groups:
         - shorebird
         - play_store
       vars:
-        FLUTTER_VERSION: 3.24.1
+        FLUTTER_VERSION: 3.38.9
   scripts:
     - &shorebird_install
       name: Install Shorebird
@@ -189,7 +189,7 @@ definitions:
     # Use &shared_env to allow us to reference this environment in other
     #   parts of the file
     shared_env: &shared_env
-      flutter: 3.24.1
+      flutter: 3.38.9
       groups:
         # Add the shorebird group to make $SHOREBIRD_TOKEN available to
         #   the Shorebird CLI.
@@ -198,7 +198,7 @@ definitions:
         #   available to the Google Play Publishing step.
         - play_store
       vars:
-        FLUTTER_VERSION: 3.24.1
+        FLUTTER_VERSION: 3.38.9
   scripts:
     # A step to install Shorebird and add it to the host machine's PATH
     - &shorebird_install
@@ -358,7 +358,7 @@ locally.
 definitions:
   environment:
     shared_env: &shared_env
-      flutter: 3.24.1
+      flutter: 3.38.9
       groups:
         # Export the shorebird group to make $SHOREBIRD_TOKEN available to
         #   the Shorebird CLI.
@@ -370,7 +370,7 @@ definitions:
         # The bundle ID of this example app.
         # Replace this with your app's bundle id.
         BUNDLE_ID: dev.shorebird.codemagic-demo
-        FLUTTER_VERSION: 3.24.1
+        FLUTTER_VERSION: 3.38.9
   scripts:
     # Download the Shorebird CLI and add it to the PATH.
     - &shorebird_install

src/content/docs/code-push/ci/generic.mdx

@@ -88,7 +88,7 @@ change. If you'd like to pin your CI to a specific Flutter version you can do
 this by adding `--flutter-version` to your command, e.g.
 
 ```
-shorebird release ios --flutter-version=3.22.1 --dart-define=HERO=Mario -- --enable-impeller
+shorebird release ios --flutter-version=3.38.9 --dart-define=HERO=Mario -- --enable-impeller
 ```
 
 ### Patching

src/content/docs/code-push/release.mdx

@@ -91,7 +91,7 @@ To release with a different Flutter version, you can specify the version using
 the `--flutter-version` flag.
 
 ```
-shorebird release android --flutter-version 3.19.0
+shorebird release android --flutter-version 3.38.9
 ```
 
 </TabItem>
@@ -163,7 +163,7 @@ To release with a different Flutter version, you can specify the version using
 the `--flutter-version` flag.
 
 ```sh
-shorebird release ios --flutter-version 3.19.0
+shorebird release ios --flutter-version 3.38.9
 ```
 
 ### Signing issues
@@ -230,15 +230,15 @@ Example output:
 ```
 $ shorebird release linux
 ✓ Fetching apps (0.3s)
-✓ Building app bundle with Flutter 3.27.0 (1e0e5760ee) (18.3s)
+✓ Building app bundle with Flutter 3.38.9 (1e0e5760ee) (18.3s)
 ✓ Fetching releases (0.1s)
 
 🚀 Ready to create a new release!
 
 📱 App: sample (d0cf1d8f-e741-4f5d-b280-b794000df1cd)
 📦 Release Version: 1.0.13+2
 🕹️  Platform: linux
-🐦 Flutter Version: 3.27.0 (1e0e5760ee)
+🐦 Flutter Version: 3.38.9 (1e0e5760ee)
 
 Would you like to continue? (y/N) Yes
 ✓ Fetching releases (0.1s)
@@ -263,15 +263,15 @@ Example output:
 ```
 $ shorebird release macos
 ✓ Fetching apps (0.3s)
-✓ Building app bundle with Flutter 3.27.0 (1e0e5760ee) (18.3s)
+✓ Building app bundle with Flutter 3.38.9 (1e0e5760ee) (18.3s)
 ✓ Fetching releases (0.1s)
 
 🚀 Ready to create a new release!
 
 📱 App: sample (d0cf1d8f-e741-4f5d-b280-b794000df1cd)
 📦 Release Version: 1.0.13+2
 🕹️  Platform: macos
-🐦 Flutter Version: 3.27.0 (1e0e5760ee)
+🐦 Flutter Version: 3.38.9 (1e0e5760ee)
 
 Would you like to continue? (y/N) Yes
 ✓ Fetching releases (0.1s)
@@ -320,7 +320,7 @@ To release with a different Flutter version, you can specify the version using
 the `--flutter-version` flag.
 
 ```
-shorebird release macos --flutter-version 3.24.5
+shorebird release macos --flutter-version 3.38.9
 ```
 
 </TabItem>
@@ -336,15 +336,15 @@ Example output:
 ```
 $ shorebird release windows
 ✓ Fetching apps (0.3s)
-✓ Building Windows app with Flutter 3.27.1 (1e0e5760ee) (18.3s)
+✓ Building Windows app with Flutter 3.38.9 (1e0e5760ee) (18.3s)
 ✓ Fetching releases (0.1s)
 
 🚀 Ready to create a new release!
 
 📱 App: sample (d0cf1d8f-e741-4f5d-b280-b794000df1cd)
 📦 Release Version: 1.0.0+1
 🕹️  Platform: windows
-🐦 Flutter Version: 3.27.1 (1e0e5760ee)
+🐦 Flutter Version: 3.38.9 (1e0e5760ee)
 
 Would you like to continue? (y/N) Yes
 ✓ Fetching releases (0.1s)
@@ -393,7 +393,7 @@ To release with a different Flutter version, you can specify the version using
 the `--flutter-version` flag.
 
 ```
-shorebird release windows --flutter-version 3.27.1
+shorebird release windows --flutter-version 3.38.9
 ```
 
 </TabItem>

src/content/docs/flutter-concepts/flutter-sdk-deep-dive.mdx

@@ -323,8 +323,8 @@ modify Dart code (not native code, Flutter engine, or assets).
 
 ## Current best practices for Flutter development in 2026
 
-**Flutter 3.38.5** (December 2025) is the current stable release, bundled with
-**Dart 3.10.4**. Key requirements now include Java 17 minimum for Android, iOS
+**Flutter 3.38.9** (January 2026) is the current stable release, bundled with
+**Dart 3.10.8**. Key requirements now include Java 17 minimum for Android, iOS
 13+ minimum, and Android 16KB page size support for Google Play compliance.
 Impeller is fully default across iOS and Android API 29+.
 

src/content/docs/getting-started/flutter-version.mdx

@@ -48,7 +48,7 @@ to create a release with a different version of Flutter, you can use the
 `--flutter-version` option with the `shorebird release` command:
 
 ```sh
-shorebird release android --flutter-version=3.32.8
+shorebird release android --flutter-version=3.38.9
 ```
 
 Any patches created with this release will be built with the version of Flutter