Cinematical.com did a very informative interview with Producer Sean Bailey about the Tron sequel, Tron: Legacy. A lot of good stuff was mentioned, but the one big thing that I got from it was that Bruce "Papa Awesome" Boxleitner will return to the Tron-universe as Tron's real-life alter-ego, Alan Bradley. There was a time there where only Jeff Bridges was attached to the project and not a whole lot was being said about Bruce, so I was a little concerned. No word on whether Tron himself will return.
Also revealed in the interview was that the amazing trailer/test footage shown at Comic-Con was just that, a test, and isn't featured in the movie. I guess I'm okay with that.