For me his is one of the highlights of Origins, but it's a bit late in the day for a cameo I think. Maybe he could have a small cameo and they've been fortunate enough to keep in under wraps, but I wouldn't hold my breath. Hopefully we can have Gambit back for a sequel. There's so much you can do with him.
Lady Luck is smiling at me. She knows something I don't.
RIP Sir Terry.