Sony and Marvel have announced that the release date for Spider-Man 4 will be May 6th 2011. Marvel also announced release dates for some of it’s upcoming movies, which you can see below.

Iron Man 2 - May 7, 2010
Thor - June 17, 2011
The First Avenger: Captain America - July 22, 2011
The Avengers - May 4, 2012

From the looks of things 2011 is the place to be. We will be getting Spider-Man 4 in May, Thor in June and Captain America in July. Only 2 years to wait!