Iron Man 3, Thor 2 and Captain America 2 are the only three other Marvel based movies that are officially a go. Over in the DC universe, Man of Steel in 2013. Ninja Turtles and (Judge) Dredd reboots too.
However, when listing projects in development at the studio, he mentioned Ant-Man, Dr. Strange, The Inhumans and Guardians of The Galaxy, before going on to say,
We are very excited about bringing things like that, maybe things exactly like that, to the screen. [...] When you tell people, you know what would be really cool? This movie, and there's a raccoon, and there's a tree... And they go, 'What?' And people like you know what it is, and get excited. And the majority of people go, 'Did you say a raccoon and a tree?' 'Oh yeah, they're going to steal the whole movie. They're hilarious.' 'Okay, I'll believe it when I see it.' I like that.
I honestly think a Gambit movie could be pretty awesome if they cast the right guy. Not sure Taylor Kitsch is the right guy, but if you get a guy that can play cool like a James Franco or a (even better) Josh Holloway you could pull it off and it would be totally awesome.