http://scifiwire.com/2010/04/iron-man-2-cast-reveal-be.php
Mr. Favreau, there was a snippet in the trailer where Pepper was in the plane with Tony. Was that meant to be a part of the Stark Expo scene where he's flying down from the plane?
Favreau: Yes. We had different versions of things that we tried. That was something that we tried, that was something that was a great image and a scene that's gonna be on the DVD. But we had two different versions of it, and because of the pacing and the way we reveal Tony Stark, it felt really good to flow into the drop down and reveal him for the first time on the stage. For those of you who haven't seen the movie, this doesn't make any sense. But oftentimes, in the editing room, we figure out what combinations of scenes ...
Downey: Gwyneth is just finding out that that scene was cut, Jon. You might be a little more sensitive.
Cheadle: You're in for a big surprise.
Paltrow: Nothing would surprise me.