The fun time starts today with X-Men Origins: Wolverine.
The life of Tony Stark (played by Robert Downey Jr.) began three weeks ago and he will be Iron Man 2 on May 7, 2010. Gwyneth Paltrow will be Pepper Potts once again and directed by Jon Favreau. Don Cheadle will be joining as a new character, James Rhodes.
We have to wait more than a year to see Iron Man 2. so here are expected movie release dates till Iron Man 2.

May 8,  2009 : Star Trek
May 15, 2009 : Angels & Demons
May 21, 2009 : Terminator Salvation
May 29, 2009 : Up (by Pixar)
Jun 26, 2009 : Transformers: Revenge of the Fallen (opening Wednesday)
Jun 30, 2009 : Ice Age: Dawn of the Dinosaurs
: Public Enemies (Johnny Depp & Christian Bale)
Jul 15, 2009 : Harry Potter and the Half Blood Prince
Aug 7,  2009 : G.I. Joe: The Rise of Cobra
Aug 14, 2009 : District 9 (produced by Peter Jackson)
Oct 2,  2009 : Toy Story (3D) & Toy Story 2 (3D) : (Toy Story 3 opens Jun 2010)
Oct 9,  2009 : The Informant (by Steven Soderbergh with Matt Damon)
Oct 23, 2009 : Astro Boy
Nov 13, 2009 : 2012 (by Roland Emmerich)
Nov 25, 2009 : Ninja Assassin (by James McTeigue)
Dec 18, 2009 : Avatar (by James Cameron)
Dec 25, 2009 : Sherlock Holmes (Robert Downey, Jr., Jude Law)
Apr 23, 2010 : The Expendables (Sylvester Stallone, Jason Statham, Jet Li)

photo by Merrick Morton, Marvel Studios