So the only big difference is the two halves breaks apart faster than in the movie -- the bow portion no longer dragging the stern up so DiCaprio can stand up as it is pulled down.
Man, that must bug Cameron. He's going to go in and recut that ending, I just know it. As soon as Avatar 2 and 3 don't perform, he's going back to play with Titanic.
Hopefully he can CGI Billy Zane out of the movie.