Disneys strategy on home video and theatrical releases changes every year as they struggle to find a way to maximize the amount of revenue from each film. The current plans goes like this: A classic film will have its home video terminated for several years (likely between five and seven) in an attempt to build up demand: tapes break, discs are lost, new families start up collections, etc. As a way of launching the video re-release, a plussed version of the film will be put into theaters as a marketing vehicle. After the theatrical release, the film will be put out on DVD (high-end) and video tape (medium end) for a limited time before it gets put into the vault again.
For Beauty and The Beast, the film will be released into IMAX theaters in a similar fashion to Fantasia 2000 was. And the Human Again scene, which was cut from the film but reappeared for the stage play, will be put into the new version of the film. Following the IMAX run, the film will be re-released onto home video for everyone to re-purchase. If this works, expect other classics to follow roughly every year.
As for Song of the South this film will probably be released at some point in the future when its potential revenue exceeds the controversy. There was the beginnings of a plan for a release, but Disneys trouble with the incident with a radio station here in Los Angeles nixed those plans. With the growing controversy thats starting to form around Dumbo, Song has been pushed way into the back of the vault. Although Song is current release in Europe and Japan if you really want a copy
I just love a double standard.