it sort of left it unsaid whether they'd be going with the cover story of Iron Man being Tony Stark's bodyguard or whether he just wouldn't have a secret identity in the future. I prefer secret identity myself. Also regarding Coulson, I think he is in the movie, but probably the last scene where he's going over the cover story with Stark, in that part he might end up getting swapped out for Nick Fury(in the movie), or at least that's my theory. That's also probably where the crossover will get put, with Fury talking about Gen. Ross and Bruce Banner, I'm guessing.