linux

FileShare is what you let other handles do while yours is open, and Windows checks it in both directions against every open handle's FileAccess. Linux and macOS only emulate it with an advisory flock, so 56 of 144 open combinations behave differently. The rule, the defaults of every File.* helper, and measured results on .NET 10.

Flutter 3.47 makes Impeller the default renderer on Windows and Linux. What actually changes underneath (it is still OpenGL ES, not Vulkan), how to A/B test against Skia on a built binary, a per-machine kill switch for release builds, and why your golden tests will not notice.

Ubuntu 26.04 Resolute Raccoon ships with .NET 10 in the archive, introduces -resolute container tags to replace -noble, and packages Native AOT tooling via dotnet-sdk-aot-10.0.