Flutter's Material and Cupertino libraries are now frozen in the flutter/flutter repository as of April 7th. This is the first step toward decoupling them into standalone pub.dev packages: material_ui and cupertino_ui. The freeze applies only to contributors; app developers are unaffected for now. After the Flutter 3.44 stable release, the new packages will be published, and developers will eventually need to migrate. The old code will be deprecated in the release after 3.44 and later deleted. Open PRs will be ported to flutter/packages, and detailed migration instructions will follow when the time comes.
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