Avatar 2 not before 2015

Jon Landau, co-producer of Avatar, announced that we won't see the 2nd part of Avatar before 2015, pointing out that it's really hard to force a specific time frame on a movie and that the movie itself that controls the time frame.He told Entertainment Weekly that the Director James Cameron is still working on the script and still creating the worlds in which the movie would take place, which is still a long and hard process.two weeks ago, James Cameron went 12 kilometers under the sea to get inspiration for the movie, a part of which would take place underwater.The 2nd and 3rd parts of Avatar will be filmed simultaneously, and then would be released in two consecutive years, but not before 2015.The 1st part was released in 2009, achieving unprecedented success in the box office earning 2 billion and 700 million dollars, becoming the most successful movie in the history of cinema.