The Marvel panel really only focused on the two 2015 releases this time, and that's fine. It gave them time to have all of the Avengers come out and discuss the movie and play around and be super charming, because they are.
It also meant that they cut a longer than average sizzle reel to show the crowd. They're still working on the movie, but they're pretty far into the process at this point, so what they had to show us was surprisingly finished, and it was very impressive. I visited the London sets for the film, and the first scene they showed was shot on one of the most impressive sets I've ever seen, a three-story completely accurate version of The Avengers Tower, complete with labs for Tony and Bruce and a downstairs that leads to a Quinjet landing pad. Wildly impressive.