Atlantis Blu-ray due out in late 2012
It will be digitally re-mastered and is expected to be released around October of this year. One of the things that the DVD release was known for was reference sound, the lossless sound on Blu-ray should be very impressive for those with a good sound system.
http://www.masslive.com/entertainment/index.ssf/2012/03/walt_disney_st udios_to_expand.html