It seems that a few Marvel secrets may have been given away with what they plan on doing with the Hulk during their Phase Three plans. While this is some rather interesting information, we must warn you that there is a rather big spoiler in here, so some of you may want to stop reading now.
It has been claimed that Marvel are planning to give the Hulk a standalone movie and that it will be based around Greg Pak's 2006 storyline, Planet Hulk. This comes from news that The Avengers 2 will end with the Hulk being lost in space, which lines up the potential for Planet Hulk.
It is also claimed that the Marvel movie universe will also introduce the Illuminati, who will be responsible for banishing the Hulk to space. This will then potentially lead into The Avengers 3, which will likely be a take on World War Hulk and his revenge driven motives.
Before all of this happens though, we still have Phase Two to complete, which will see Iron Man 3 released on May 3, Thor: The Dark World comes on November 8, Captain America: The Winter Soldier arrives on April 4, 2014 and Guardians of the Galaxy on August 1, 2014 before Marvel then conclude Phase Two with The Avengers 2 on May 1, 2015.