After the credits, stark comes home, and finds that "Jarvis" the house computer system, isn't responding. Samuel Jackson walks out from the dark and introduces himself as Nick Fury. He then says that Stark isn't the only superhero around and that he wants to talk to him about the avenger initiative
And i heard something about Gwyneth Paltrow having signed up for 6 movies in total.
Edit - Raul got it under control lol.