WinRT was abandoned by Microsoft. They said the new hotness is now WinUI 3.
Well that was until late 2023. Then they realized nobody was writing pure Windows UI code in WinUI 3. (Probably because people were still playing catch up). So they have now have unofficially mothballed WinUI 3 and the new hotness is now MAUI - cross-platform UI! - in 2024. (But no Linux support ho-ho)
I hope Microsoft would settle for one UI library instead of pushing a new one every five years. WinUI 3 is their most recent invention. Application developers can't keep up with the changing standards.
With all the mismanagement around WinRT, only the Windows team themselves and companies with sunken cost into UWP looking into a migration path, still care about WinUI 3.
Look no further than the Github repos for the general sentiment.
Well that was until late 2023. Then they realized nobody was writing pure Windows UI code in WinUI 3. (Probably because people were still playing catch up). So they have now have unofficially mothballed WinUI 3 and the new hotness is now MAUI - cross-platform UI! - in 2024. (But no Linux support ho-ho)
Not sure what it will be next year.