Director of the original TRON, Steven Lisberger, has said that he is in the early stages of developing TRON 2.0 for Disney. Apparently, two scripts have been written for the sequel one by Lisberger and one by Richard Jeffries, who penned the unproduced screen adaptation of Marvel Comics, SILVER SURFER. Lisberger said, "Its been an interesting experience for me, certainly, to go back to that film after 20 years and really study it and see what it was about from this perspective. I learned a lot about my own film. Its going to be interesting on the next TRON to try to create some of the sensuousness that the first film had in terms of the graphics, but to do it in a digital way."
Read more about the TRON sequel from director Steven Lisberger in AWN sister site VFXPro.coms article.