Check out the panel from James Cameron's Avatar panel from Hall H yesterday at Comic-Con 2009.
In the future, Jake, a paraplegic war veteran is brought to another planet, Pandora, which is inhabited by the Na'vi, a humanoid race with their own language and culture. Those from Earth find themselves at odds with each other and the local culture.
The official site for the film has also gone online: avatarmovie.com
Avatar is in theaters December 18th, 2009 and stars Sam Worthington, Zoe Saldana, Sigourney Weaver, Michelle Rodriguez, Giovanni Ribisi, Joel David Moore, CCH Pounder, Peter Mensah, Laz Alonso, Wes Studi and Stephen Lang.