A novelization of Batman: Gotham Knight is set to be published on April 29, 2008. According to the May 2008 catalog of the Berkley Publishing Group, comic author Louise Simonson will be working on the book, which is based on the animated prequel to The Dark Knight.
The plot description from the catalog describes the book:
After Wayne Manor is burned to the ground, Bruce Wayne establishes a new base of operations, and - as Batman - refines his personal vigilante mission, encountering foes both old and new.
The Dark Knight opens on July 18, 2008, and stars Christian Bale, Heath Ledger, Morgan Freeman, Gary Oldman, Aaron Eckhart and Maggie Gylenhall.