It seems like a good iterative approach to me. Classic desktop apps can still run, but it seems clear they are no longer preferred. WinRT offers an interface ov

It seems like a good iterative approach to me. Classic desktop apps can still run, but it seems clear they are no longer preferred. WinRT offers an interface over Win32, a skim coat to even out all the cracks, quirks and special cases that have appeared over the years. At some point down the line you can jettison Win32 altogether and replace it with whatever you want, or even leave it in place.