The James Cameron movie is called "Avatar" but its not related (directly anyway) to virtual worlds software based avatars. Its much more serious than that. But... wait and see!

More details and trailers at:

• Avatar Movie Official Web Site - http://www.avatarmovie.com/
• Avatar Trailer on Apple.com - http://www.apple.com/trailers/fox/avatar/hd/
• Pandorapedia