Marvel Studios' president of production Kevin Feige was at the San Diego Comic-Con 2009 and Collider managed to get Feige to reveal a bit about what superheroes we might expect from The Avengers film. Take a look at what he had to say below.
Kevin: I think we know. It's going to be Iron Man, Thor, Captain America, Nick Fury. I think it's safe to assume that there will be some members of the Hulk universe in the film as well. In terms of the additional, I think Black Widow for sure. SHIELD's organization for sure. And, again, what's exciting to me about the Avengers movie are seeing those four characters together and interact with each other. Anywhere from the first issue of the Avengers to Civil War, the dynamic between Steve Rogers and Tony Stark is awesome and fascinating. It brings out sides of the others that won't be brought out in their own franchises. Throwing Thor into the mix is a whole other thing and I think that will be cool. So to pile in another ten or fifteen...or frankly even four...I think will be too many.
Is the Hulk in it?
Kevin: You know Zack Penn is outlining it as we speak so we'll see.
The Avengers is currently set for a 2012 release date. We'll certainly keep you posted on any new updates surrounding this new film.