I'm going to wait, for a few reasons.
First, I'd like to move to a 64 bit OS, and I want to wait to see how the apps I use cope.
Second, this first wave of 'public' is a really big beta test, and well, I don't need to participate.
Third, my preference would be to put Vista on a new hard drive, so I pay OEM price not retail, and the best drive for me now is a Raptor, which isn't exactly new. So, I'm waiting for faster hardware.
I'm not in any rush, but if the next generaton Raptor showed up tomorrow, I'd probably buy it then.
rr