I had a Windows 8 Pro RTM that I tested on a VHD Aug 15th :)
I actually like it, i'll get over a few frustrations/annoyances with Windows 8 in due time. But that "time" part of what I just said is the annoying part of it all. The Pro RTM that I tested seemed to have slacked off a bit with being geared more towards tablet users, thank god. There's a few things that seemed easier to do, but still lots of touch-based features geared away from the navigability for desktop users that I don't quite like.