Kingdom Hearts 3D has been confirmed for a March 29 release. The game's official soundtrack won't be too far behind. Amazon has posted a listing for the "Kingdom Hearts Dream Drop Distance Original Soundtrack for release on April 18.
The brief product description says that the soundtrack spans three discs. We'll have to wait for official announcement from Square Enix for more details. Retail leaks usually indicate that official announcement is coming soon, so check back over the week.
[via FF Reunion]