I guess maybe we would have heard something by now, but it'd be nice for Banner to at least have an appearance in Iron Man 3, seen as how chummy him and Stark were in the Avengers. And they did drive off together in the same car at the end of the movie too
I never understood the explosion of interest at Stark and Banner in Avengers. Are they really that popular together? It seems RDJ has great chemistry with everyone.