Choose two real stable releases. Boring Doc lists every indexed change between them with its evidence, impact and migration instructions, and can fetch the verified source diff from GitHub.
40 indexed changes across 4 versions: 3 breaking change, 1 removed, 2 deprecated api, 34 bug fix.
4 high-impact items. Start with: ImageFilter.blur default tile mode automatic selection; Updated Material 3 Slider; Updated Material 3 progress indicators; ….
Read the 5 official migration guides first, apply `dart fix` where available, then upgrade and run your test suite. Deprecations can be scheduled; removals cannot.
Prefer stepping through stable series sequentially; each breaking-change page has a checklist, before/after code and the official guide. Verify with `flutter analyze`, `flutter test` and a profile-mode run on each target platform.
Tick “Fetch verified source diff” above (or load it now) to corroborate these announcements with the git history between the two tags.
The `ui.ImageFilter.blur`'s default tile mode is now automatically selected by the backend. Previously `TileMode.clamp` was used unless a different tile mode was specified. Now, the default is `null` and specifies automatic selection unless a specific tile mode is specified.
The `Slider` has been updated to match the Material 3 Design specifications.
The `LinearProgressIndicator` and `CircularProgressIndicator` have been updated to match the Material 3 Design specifications.
Android's v1 embedding has been removed in Flutter 3.29.0. This follows the deprecation described in Android v1 embedding app and plugin creation deprecation. The following is a full list of classes removed.
The `flutter_test` package and `flutter` tool will no longer use the `webGoldenComparator` top-level variable, and instead use the original `goldenFileComparator` top-level variable (like the non-web platforms).
The `ThemeData.dialogBackgroundColor` parameter was deprecated in favor of the `DialogThemeData.backgroundColor` parameter.
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