Warner Bros. has shuffled its release schedule, moving back Bryan Singer’s “Jack the Giant Killer” nine months and undating its “Arthur and Lancelot” project.

“Jack the Giant Killer,” also produced by Legendary, was moved from June 15 to March 22, 2013. New Line-produced “Jack the Giant Killer,” a twist on the “Jack and the Beanstalk” story, will face off against Paramount’s “The Croods” and Sony’s “Captain Phillips” on its new date.

“Arthur and Lancelot,” to be directed by David Dobkin, was taken off the previously announced date of March 15, 2013.

Warner Bros. also shifted “Rock of Ages” back two weeks to the vacated June 15 slot, where it’s lined up against Sony’s Adam Sandler comedy “I Hate You, Dad.”

Warner Bros. announced the shifts Thursday. Studio has a potentially powerful slate this year with “Dark Shadows” on May 11, “The Dark Knight Rises” on July 20, “Gangster Squad” on Oct. 19 and “The Hobbit: An Unexpected Journey” on Dec. 14.

Studio announced it had dated “Arthur and Lancelot” last summer. It’s being produced, directed and written by Dobkin, but the leads have not been cast yet. “Sherlock Holmes” producer Lionel Wigram is also attached to produce, with Dobkin’s partner Jeff Kleeman exec producing.