Ed Norton, when asked about wether or not he is going to be in the Avengers movie:
"I probably won't comment on that, just because they [Marvel] keep a pretty tight reign on what they are letting out. I'll let them say,"
I`m gonna go ahead and get my hopes up :D
Considering all the rumours about the problems between Marvel and Norton, i`m pretty sure if he wasnt a part of the Avengers movie he would`ve just said. I guess this at least means he`s open to discussion on his own involvement in that particular project. We might find out sooner though, when Iron Man 2 is released, if rumours of the Bruce Banner cameo are true