TR2N Trailer Tron 2 Better Version : Teaser Trailer
Apparently: “John Lasseter got behind the project. Disappointed with the direction Steve Lisberger was going in, Lasseter hired Lost writers Eddie Kitsis & Adam Horowitz to overhaul the screenplay.
“But the guys at Disney weren’t yet convinced that Kosinski’s vision of Tron 2 would be commercially viable. So Kosinski spent six months with DigitalDomain creating the three-minute-long sequence which was shown at Comic Con as a teaser trailer.” - via slashfilm
