Been waiting for this for so long. I was fully into the film when it was at the cinemas and saw it about 8 times. The actual film is like I remember it with the new additions warmly welcomed though they do not actually add that much to the overall experience.
As for the special features I wasn't really that impressed. They are more of a generic behind-the-scenes package about the production. I would have loved to of seen more about the whole journey of Avatar from its very early conceptual stages and about the techniques used by good ol' Weta digital and what new technologies THEY had to develop as a studio. But in saying this the special features would be good for any movie buff XD