Eh, I've known about this for a while. Can't wait for them to finish with it. It's unlike most new versions of Windows. They pretty much stripped it down big time, it only takes up 25mb disk space so far. The guy says he'd like to get it smaller. He also claims that the kernel has been improved.
Plus he mentions about a lot of people complaining about all the bloat in Vista. This version of windows is going in the complete different direction. It's being built efficiently, unlike that crap OS Vista that uses the hell out of some resources.
He was running it in a VM, and it was still pretty nice on resources. I hope they keep going in the direction they have been, then I may actually ditch XP some day. Just know I'll never be moving to Vista.