A lot of news regarding the sequels to Avatar have been released today. James Cameron has announced that Avatar 2 and 3 will be filmed back to back.
He also expects most of the original cast to return. As far as the release dates go Avatar 2 is scheduled to be released in December of 2014 and Avatar 3 in December of 2015.
Check out the official word.
I am in the process of writing the next two Avatar films now. We are planning to shoot them together and post them together, and we will probably release them not quite back to back, but about a year apart. Christmas ’14 and ’15 is the current plan.