The demo was rumored to come out a few weeks ago, but didn't and nothing was said. Their message board was flooded with people screaming for it. I'm glad they finally came out and told us something.
I think they should have released the UT2002 benchmark to the GP as something to hold everyone over. Sure, most people would have scores of 10fps, but so what. It would have been something to talk about. What came out of E3 for the fans? Nothing. Only screen shots of UT2003, a few articles, and a movie of D3 which you had to search for on the net.
I was reading a faq about the UT2003 here
http://cleaned.beyondunreal.com/UT2FAQ/UT2FAQ.htmNo Voodoo3 support period. It will run a tnt2 but you gotta have a fast processor for that. Upgrade to at least a GF3 to get the eye candy. You'll want the GF4 to see the 1024x1024 textures.