In 1999, United Artists and Apple Records digitally remixed the audio of the film for theatrical and home video re-release. Though the visuals were not digitally restored, a new transfer was done after cleaning the original film negative and rejuvenating the colour. A soundtrack album for this version was also released, which featured the first extensive digital stereo remixes of Beatles material.
The previous DVD also featured a "soundtrack only" version, in which the dialogue is removed, leaving only the music and the songs. As aforementioned, the MGM disc is out of print and the film's rights have reverted to Apple who plan a June 2012 reissue on DVD and Blu-ray.
Read more about this topic: Yellow Submarine (film)