The file refers to the Project Reunion 0.5 release (now known as the Windows App SDK ), specifically containing distribution files, often including documentation or assets (referenced as "_-_webp").
If you are looking for documentation, release notes, or the official announcement, you can find it in the Microsoft Developer Blog and the Microsoft Learn release notes. Are you trying to: this specific version? Read the release notes ? Migrate an older project to this version? Let me know which you need! Announcing Project Reunion 0.5! - Windows Developer Blog Reunion-0.5-dists_-_webp.zip
It was the first stable, supported version of WinUI 3 , designed to unify Windows desktop (Win32) and UWP development. Features: The file refers to the Project Reunion 0
Supported by third-party UI suites like Syncfusion and Uno Platform for cross-platform development. Read the release notes
Allowed developers to build and publish apps to the Microsoft Store.
This release was a major milestone announced in March 2021 by Microsoft. Key Details about Project Reunion 0.5
Included tools to ensure apps would work with future Windows releases. Frameworks: Enabled WinUI 3, a decoupled XAML UI layer.