Comment by p_ing

> It would be much unlike Microsoft if they didn't bring Win32/Win64 compatibility along for the ride somehow, and very stupid also, because as you say that is the real core of Windows in a lot of ways.

This requires NT API compatibility due to applications using NT API. Despite Microsoft telling devs don't use the NT API, devs use the NT API and Microsoft makes adjustments to ensure compatibility.

> I have no idea what they're planning or why

Clearly, because the whole idea not only makes no engineering sense, it makes no financial sense. They need to build the NT kernel anyway -- it runs the entirety of Azure services!