Since the initial post some changes have apperantly been made to the release dates.
May 7th 2010: Iron Man II with Mickey Rourke as Whiplash and Scarlett Johansson as Black Widow
May 6th 2011: Spider-Man 4
June 17 2011: Thor (originally in July)
July 22 2011: First Avenger Captain America (originally in May)
May 4 2012: The Avengers (Originally July 2011)
http://www.comicscontinuum.com/stori...3/12/index.htm