Yeah, I've heard quite a bit about this on AICN and the like.
Okay, first I believe the working title is TR2N. Or Tron 2. It's not a remake, it's more of a sequel. And Jeff Bridges is set to reprise his role as Flynn (which IMO, makes this whole thing very interesting). I can't remember if Bruce Boxleitner is going to be back or not.
They apparently showed some test footage at ComicCon last year. Stuff with lightcycles, new stuff with Jeff Bridges. It looked pretty sweet.
All in all, I'm actually looking forward to this one.
ETA: The
imdb page. Boxleitner is rumored to be in it. And Karl Urban may be cast as well (I dig that guy for some reason).