Looks awesome, I'll definitely be seeing it at the movies. Stereoscopic too.
The first one was a completely new idea when it came out - the actors had to be told what a "program" was because back then nobody had computers at home. Nobody. I thought they did an incredible good job considering. The graphics look crap by today's standards but the acting was awesome by Jeff Bridges - who is back for this new one. The story wasn't exactly complex, but it was still leagues above transformers 2 or half the other crappy effects based blockbusters we get these days.
It's really worth watching just so you know your history, and you'll appreciate the new one so much more when you see it
There's also a game adaptation coming out though I doubt it'll be any good or anywhere near as good as the previous tron game (Tron 2.0) - Tron:Evolution