Check out the vid: [link]
"According to comingsoon.net, James Cameron is creating anoceanic ecosystem for Pandora, partially to reflect his concerns of theconservation of the Earth's oceans. What are those concerns? Overfishing,climate change, and the effects of greenhouse gasses, according to Cameron. Allimportant issues that can negatively impact our ecosystem. Cameron was quick topoint out that although Avatar 2 and 3 won't take place completely under water,he is excited to further explore that aspect of Pandora's environment.
Cameron is currently in the process of writing Avatar 2 and3, and plans on finishing both scripts by the end of the year with pre-productionon starting as soon as January of 2013. According to Hero Complex, Cameronplans on writing the films as two separate stories intended to complete the arcthat the first Avatar started, and that he's locking himself in his "top secretwriting cave" in order to finish over the next three months. Sounds like he'sgot his work cut out for him. As of now, Avatar 2 is expected to hit thetheaters in 2015."
Aside from James Cameron's obvious environmentalist agenda with the films, the sequel(s) sound like they'll be a hit! 2015 is a loooooong ways away for part 2. But, we'll continue to keep you guys up to date with news as pre-production starts up next year!