Here's your first look at Microsoft's new WinUI 3 Registry Editor, but it's a developer sample preview, so it may not ship on Windows 11 anytime soon. Windows Latest found the app inside Microsoft's open-source Reactor repository, and I built it myself on Windows 11. It keeps the familiar two-pane layout but replaces the cramped Windows 95-era interface with native WinUI 3 controls, a dark-mode-ready design, and smoother animations. It can read, create, rename, and delete registry keys, edit values, and search the registry. It even uses Mica, with no Electron or WebView2 involved. There are still unfinished features, and Microsoft hasn't announced plans to replace regedit.exe. This is a developer sample made by Microsoft, not an official Windows 11 replacement.