The film's IMAX release presented the film open-matte, at an aspect ratio of 1.90:1, meaning there was more picture information visible in the top and bottom of the frame than in normal theaters and on home video.
Some theaters and one of the Blu-ray releases have an overture that plays before the film.
There also was a Sing-A-Long version released to theaters (2D only). This version is also included on the Blu-ray.