It's impossible for me to look forward to any film but Man of Steel at the moment...
But I think if it wasn't out this year, Thor: The Dark World would be the Superhero film i'd be looking forward to most, not Iron Man 3. I dunno, I've just never been a massive Iron Man fan.
Does look like there will be some cool moments in it though.
Superman: Don't be afraid.
Lois: I'm not. Helicopters, danger, go, go, go! Then we'll talk.