**Thor **and Captain America are still filming at the moment, but the next Marvel offering, and the team up of those two with Marvel's other favourites in The Avengers, has a start-of-shooting date, and it's February 2011.
That's no great surprise, of course: the film's projected release date of May 4, 2012 means that it will shoot about 15 months before release, which is about standard for a big effects blockbuster these days (3-ish months shooting; 12-ish months post-production).
Still, it's good to know that we're not just dreaming, and Joss Whedon is indeed directing an Avengers movie with Robert Downey Jr as Iron Man, Scarlett Johansson as Black Widow, Chris Hemsworth as Thor, Chris Evans as Captain America, Samuel L. Jackson as Nick Fury, Mark Ruffalo as Bruce Banner, Jeremy Renner as Hawkeye and Clark Gregg as Agent Coulson. It's the superhero equivalent of the Wu Tang Clan, and we can't wait.