Microsoft is migrating core Windows 11 experiences to the WinUI 3 framework to reduce latency. The company detailed the changes in a GitHub post on May 12, 2025.
Explorer startup improvements detailed
Explorer startup improvements include a 41% reduction in memory allocation, a 63% reduction in temporary allocations, and a 45% reduction in function calls. WinUI code execution time is reduced by 25%.
These improvements will be reflected in the WinUI 3 main branch and WinAppSDK 2.x. Some optimizations require opt-in initially, but Microsoft plans to switch to opt-out by default.
Microsoft has not confirmed a specific release date for the updates.
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