On August 26 Disney plans to release a new "Collectors Edition" version of Tim Burton's "The Nightmare Before Christmas" on DVD. What makes this release noteworth is the addition of a feature other studios have already added to some titles, namely a special copy of the movie which will be playable on as-of-yet unspecified devices. Although the specifics of the feature haven't been announced, we do know they're calling it a Disneyfile and it appears likely that other releases may also be getting it in the future.
Disney's move follows other releases in recent months from Warner Brothers and 20th Century Fox, which included similar digital copies. Both the Warner Brothers release "Harry Potter and the Order of the Phoenix" and Fox's "Live Free or Die Hard" included both a low bitrate version for portable media players and a higher bitrate version for computer playback. In both cases the copy included the use of Microsoft DRM, making them unplayable on the iPod or, ironically, Microsoft's own Zune.