He said: "The second, third and fourth films all go into production simultaneously. They're essentially all in preproduction now, because we are designing creatures, settings, and characters that span all three films. And we should be finished with all three scripts within the next, I would say, six weeks….The biggest pressure I feel right now is cutting out things – I love to get the film down to a length that is affordable. There hasn't been a problem finding new and wonderful things to include in the movie."
He also commented on the rumors from last September that Arnold Schwarzenegger would play the villain. He added: "As of right now, he and I have not discussed it, and I don't see a role as the scripts are coming together that would be appropriate for him, so I would say probably not."
The Avatar sequels will be written by Cameron along with Josh Friedman (War of the Worlds), Rick Jaffa & Amanda Silver (Rise of the Planet of the Apes and Shane Salerno (Savages, Salinger). Avatar 2 arrives in December 2016, followed by Avatar 3 (December 2017) and Avatar 4 (December 2018). The series stars Sam Worthington, Zoe Saldana and Stephen Lang.