These excerpts are from
The Hollywood Reporter:
"Walt Disney’s Tron Legacy 3D has passed the $50 million box office mark on Imax screens, with the giant screen exhibitor reporting the tentpole pic has generated $34.7 million domestically since opening on Dec. 17"
"Tron Legacy 3D awaits openings in several international markets, including Germany and Austria, and an exclusive Imax-only five-day run in France ahead of a nationwide release."
"The film's total box office in all theatres and formats worldwide has reached $328.8 million."
With these sorts of numbers (despite the critics' bad to mediocre reviews) - a sequel must surely be looking more likely now?