Well this seems a bit out of left field, but maybe the writing was on the wall the whole time, and I let my hoping get the best of my common sense. See at first I said, 'Gosh just a few days ago Sam Worthington said he was meeting with James Cameron in a week to discuss
Avatar 2.' Which makes you think the sequel could start filming pretty soon, but in those same interviews he pointed out that Cameron had a story all thought out, but hadn't written the script yet.
According to Landau this morning, the first sequel is “four years away.”
So that’s 2016 by a literal count, though we could be bendy and assume that Christmas 2015 would also be an option. Expect Avatar 3 a year later, as the performance capture and cinematography would take place back-to-back with the second film.
Landau promised that Avatar 2 was going to showcase advanced technology, from the 3D camera system used to the CG and performance capture, but also in terms of a higher framerate. This, he says, is the new frontier that he and Cameron are most interested in pushing. - bleedingcool.com