"The Avengers 2" not before 2015

The last scenes in "The Avengers" forced the assumption that there would be a 2nd part. After only a week the film became the most successful in history in profits, making 700 million dollars. Therefore, Marvel and Disney announced a 2nd part is in the works.Director Joss Whedon used the popularity of all superhero characters to make the huge blockbuster; however, the problem is how they will be reunited again.No dates are announced yet; however, it won't be before 2015 as other films for the same superheroes are already being produced such as "Iron man 3", "Captain America 2" and "Thor 2".The producing company will have a hard time convincing all actors to return in the 2nd part, especially Robert Downey Jr. who said he doesn't want to play "Iron man" again.