- .NET Core will soon run all three UI technologies of modern Windows UWP, WinForms and WPF (.NET Core 3). - The Windows Compatability Pack for .NET Core shifted some popular .NET Framework libraries to .NET Core (some only on Windows).
There are one thing, Microsoft is really bad with: Telling the world that something is deprecated. There is a set of technologies in the .NET Framework which have no future: AppDomains, WCF, Code Access Security, Workflow Foundation, Cardspace, ... (just to name a few). They are all already dead for some years, but no one tells. They are supported in the .NET Framework but no progress happens. And .NET Core will never see them.