Warner Bros. Records will release a Special Edition version of The Dark Knight soundtrack on December 9. Not much is known about the release, but the Amazon.com listing states that it includes two discs.
Stay tuned for more updates on the Special Edition Soundtrack.
UPDATE: The Amazon.com listing has been updated with the following description and track listing:
‘The Dark Knight: Original Motion Picture Soundtrack’ returns with the ASCAP-winning composers from Batman Begins- Hans Zimmer and James Newton Howard for a powerful orchestral score. The Special Edition features the complete score on two CD’s plus four bonus remix tracks; it also contains an 8x8x40 page hardbound book.
Source: Tom Tinneny