From NextMovie:
The as-yet-untitled "Tron 3" project gained a screenwriter last week, and now it has officially gained a star.
Garrett Hedlund confirmed to NextMovie exclusively that he would follow up his 2010 performance as Sam Flynn in "TRON: Legacy" by appearing in the long-rumored sequel, which may begin shooting in 2014, according to some sources.
Tron 2 wasn't perfect, but it was a great film and now that the ground work has been laid down, the road ahead is open wide for the kind of stories a modern audience can fully embrace.
Disney did the diligence and delivered something to satiate the rabid fans, hungry for more Tron.
I will say out of all the 3D movies coming out these days, Tron: Legacy was best suited for utilizing the effects.