cecil: Never got to play Tron 2.0 if they ever do release it I hope it's PC+Mac :)
IronArcturus: Tron 2.0 was really fun! There was a Windows, Mac, and Xbox version of it. I wonder if that is part of the "console war..."
The only potential hiccup I could imagine for that game is that Monolith (the developers) are now wholly owned by Warner Brothers. But Disney owns both the IP and original publisher, so I'm guessing that the rights to distribution and the source code would more than likely still rest with Disney.
Tron 2.0 used Lithtech Jupiter (the same as NOLF2, IIRC), and has Gold status for WINE 1.7.32, so I'd wager that a Mac/Win/Lin release is possible.