Warner Brothers has officially pushed back "Harry Potter and the Half Blood Prince," the 6th installment of the wizard series, to a July 17, 2009 premiere. It was previously expected to be a November 2008 release.
Half Blood Prince delves more into the background and family history of Lord Voldemort.
Apparently, the shifting production schedules caused by the writers strike earlier this year prompted the studio to reassess the ideal release date for the profitable franchise. The very successful summer release of the previous Potter film, "Harry Potter and the Order of the Phoenix" also prompted the decision.