#53120 tracks supporting Windows arm64 as a development environment; this is for being able to build Flutter Windows applications that run on arm64.

This would require:

• Windows Arm64 support design doc #129649
• Dart support for Windows arm64: [vm] Support Windows arm64 dart-lang/sdk#47824
• Dart support for cross-compiling Windows arm64 from x64 (since there are few Windows arm64 devices, requiring one for building would be problematic; for initial test purposes support without cross-compiling would be useful though)
• Engine build support for arm64: Enable native Windows on Arm build engine#35962
• CI and uploaded artifacts: Add CI builder for windows-arm64. engine#38739, https://flutter-review.googlesource.com/c/recipes/+/38132)
• [Windows] Announce breaking changes to the build directory #129804
• [Windows] Update the Windows build layout to include the target architecture #129805
• [Windows Arm64] Run existing devicelab tests on Arm64 #129806
  • [Devicelab] Add Windows Arm64 machines to the non-staging pool #134083, to allow promoting Windows Arm64 tests out of bringup
  • [Windows Arm64] Add devicelab tests that target Android from Windows Arm64 host #136378
  • Add Windows Arm64 machines to the Flutter try pool #141986, to allow pre-submit Windows Arm64 tests
• [Windows Arm64] Add build-only Arm64 CI to flutter/packages #129813
• [Windows Arm64] Add Windows Arm64 engine CI #137161
• [Windows Arm64] Update tool to target Arm64 on Arm64 hosts #129807
• [Windows Arm64] Allow cross compilation using --target-platform option #129808
• [Windows Arm64] Create Flutter SDK for Windows Arm64 #136417
• [Windows Arm64] Support preview device #139949