The release date of the new Harry Potter film, which earlier was expected to open in theaters later this year, has been pushed back to next summer, Warner Bros. Pictures said.Harry Potter and the Half-Blood Prince the sixth installment of the popular franchise, will be released on July 17, 2009 as Hollywood's writers strike earlier this year has changed the competitive landscape for the next summer season.The star had passed his O.W.L. exams now.