In October of 2010, Twentieth Century Fox announced that James Cameron's Avatar 2 was targeted for a December 2014 release and would be followed by Avatar 3 in December of 2015. Producer Jon Landau now tells Empire that "2014 will be a tough date for us to make. It's about getting it right... Movies make release dates; release dates don't make movies."
He does say they have started working on the sequel already, however. "WETA are already working and we have our core team, (animation supervisor) Richie Baneham and (digital effects supervisor) Nolan Murtha, working with us. And we're working on underwater performance capture."
Regarding the underwater scenes, he added that "It's going to be like the Floating Mountains in the first movie. It's not going to be all underwater; it's going to be a place we go to, leave and come back to."
You can watch the interview segment using the player below.