Re: Wow.
"this is a great opportunity to lose Win32 forever."
A great opportunity for who, exactly?
*You*, dear user, have been able to lose Win32 forever for many years now. Funnily enough, even though it costs more than the alternatives, most end-users have stuck with it. This is probably because they've spent more on apps than on the OS and half their stuff hasn't got a non-Win32 version for any amount of money.
Microsoft, too, are surely large enough to be able to lose Win32 whenever they like. In the last decade, they've reproduced most of the functionality in the .NET universe *and* started to create a third platform with this WinRT thingy. Even if they didn't have Mongolian hordes at their beck and call, most of what we think of as Win32 is a user-level environment on top of a fairly well-defined NT kernel that isn't terribly different (in terms of feature set) from the Linux kernel.
So both you and Microsoft could drop Win32 anytime you (or they) like, and that's how it has been for at least a decade. The evidence suggests that neither party sees this as a great opportunity.