It is now confirmed that the film will use elements of the Extremis storyline but the villain was also revealed (unofficially, of course). The storyline involves Tony bonding with his armor to The footage showed some comedic scenes and then Ben Kingsley's voice was heard and Tony's pad fell into pieces in the ocean and then Kingsley came out in full Mandarin gear with the ten rings*. The crowd was reportedly wowed.
While Thor 2 and Captain America 2 were already officially announced, Marvel confirmed the films and their titles. The title for Thor 2 is Thor: The Dark World. Marvel chief Kevin Feige said that the film will begin shooting in a couple of weeks, is directed by Alan Taylor and will hit theaters on November 8, 2013. The title for Captain America 2 is much more revealing. The title is Captain America: The Winter Soldier, which refers to Captain America's pal Bucky Barnes, who SPOILER died in Captain America. That film will be directed by Joe and Anthony Russo and will hit theaters on April 4, 2014.
That's it for now for Marvel news, but look for more announcements, casting news and release dates for films like Thor: The Dark World, Captain America: The Winter Soldier, Guardians of the Galaxy, Ant-Man, and Black Panther (which there has been no announcement for) in the future.