3.15.0-15.1.pre Developer Guide
What's New for Developers
Flutter 3.15 beta focuses on stability and performance through extensive memory leak fixes across core widgets, while adding powerful new features like MatrixTransition animations and enhanced text selection gestures. The release improves Material 3 component styling, strengthens iOS 17 support, and modernizes web platform code through package:web migration. Developers should prepare for breaking API removals related to deprecated image handling and testing utilities.
Highlights
- Memory leak fixes across Form, EditableText, and overlay components improve app stability
- Enhanced text selection with double-click, drag gestures, and improved word-by-word movement
- New MatrixTransition animation widget for advanced transformation effects
- iOS 17 support with improved physical device tooling and predictive back fixes
- Material 3 refinements including PopupMenu styling, DatePicker overflow fixes, and theme improvements
- Web platform migration to package:web for better interoperability and standards compliance
- Improved testing with microsecond precision pump support and SemanticsNode finders
Breaking Changes
- Removed ImageProvider.load, DecoderCallback, and PaintingBinding.instantiateImageCodec APIs
- Removed deprecated MaterialButtonWithIconMixin
- Removed deprecated PlatformViewsService.synchronizeToNativeViewHierarchy
- Removed deprecated androidOverscrollIndicator from ScrollBehaviors
- Removed deprecated onPlatformMessage from TestWindow and TestPlatformDispatcher
- Removed deprecated TestWindow text scale factor and platform brightness test values
- Removed fast reassemble and single widget reload feature
Deprecations
- describeEnum function deprecated
Recent Releases
All releases →
3.41.0
Feb 11, 2026
Release Notes →
3.38.0
Nov 12, 2025
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3.35.0
Aug 14, 2025
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3.32.0
May 20, 2025
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3.29.0
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3.27.0
Dec 11, 2024
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3.24.0
Aug 6, 2024
Release Notes →
3.22.0
May 14, 2024
Release Notes →
3.19.0
Feb 15, 2024
Release Notes →
3.19.0-0.1.pre
Jan 11, 2024
Release Notes →
3.18.0-0.1.pre
Dec 12, 2023
Release Notes →