I haven't seen anything regarding Windows 8 or what it's supposed to look/perform like aside from the article saying the Notch thinks it's bad for indie devs which I didn't bother to read. I have no plans to upgrade though, mostly because a) I never upgrade to a new OS when it first comes out, I'd rather wait a bit until they get all, or at least most, of the bugs out first. And b) I can't bloody afford it right now.