Yeah, it’s Entertainment Weekly. It’s to be expected, unfortunately.
I have no idea if any of the images on the cover are original or new, or if they were all just taken from other places and slapped lazily together to make a cover. And what’s up with Mark Ruffalo’s “I’ll rape you in a dark alley” stare?
In any case, “The Avengers” star, from top left to bottom right: Robert Downey Jr. as Tony Stark/Iron Man, Scarlett Johansson as The Black Widow, Chris Hemsworth as Thor, Jeremy Renner as Hawkeye, Chris Evans as Captain America, and Mark Ruffalo as Bruce Banner/The Hulk.
Joss Whedon directs the upcoming 2012 film.
UPDATE: Replaced the small EW cover with Marvel’s version. Plus, three official images in the EW article can be found here.