Robert Downey Jr. plays Tony Stark and Iron Man in such a way that most people can’t imagine anyone else taking on the role. I am one of those people. His multi-movie deal ended with Iron Man 3, and there was some doubt about him portraying the superhero again. Luckily, he’ll be putting on the armor at least a couple more times. Marvel announced that Downey signed a two picture deal to appear as Iron Man in The Avengers 2 and The Avengers 3.
Note that there is no mention Iron Man 4. Maybe it’s a sign that all the heroes will max out at three films. I’d be okay with the decision; it seems smart to put a cap on them instead of just dragging them out only because they’re making money. We’ll see.