Warner Bros. has decided not to release their film version of Harry Potter and the Half-Blood Prince this November, debuting it on July 17, 2009 instead. Warner president Alan Horn says the film would have been ready as scheduled but they want to take advantage of the “relative dearth” of big films next summer (as a result of the production lag from the writers strike). “It feels like we have an opportunity in the summer,” Horn said. As the LAT notes, “the shift in schedule is already roiling Potter fans, who are among the most intense devotees in contemporary pop […]