Well they still have two OS versions (although Windows Phone 8 now shares the Win 8 kernel). The real question is if Microsoft's long bet on tablets and touchscreen PCs being the future of desktops is a good one. For once, I think Microsoft is aiming big with its OS, and that's something to be admired. It's going to piss of techies, but it has a real shot at making tablets and hybrid PCs more useful for everyone else.

Also, it seems pretty clear to me that Win 7 is going to stick around for a long time, perhaps even longer than XP. That'll likely be the go-to OS for techies and people building desktops down the line.