Warner Bros. has notified us that the release day for Harry Potter and the Order of the Phoenix has been moved up two days from Friday, July 13 to Wednesday, July 11.

The studio did not indicate why the schedule change, however with the overwhelming success of Pirates of the Caribbean: At World's End, which Disney had moved up its release day from Friday to Thursday, Warner Bros. may be looking to cash in on a strong "5-day opening weekend".

The movie will be released in both conventional theatres and IMAX.

In Harry Potter and the Order of the Phoenix, Harry returns for his fifth year of study at Hogwarts and discovers that much of the wizarding community is in denial about the teenager's recent encounter with the evil Lord Voldemort, preferring to turn a blind eye to the news that Voldemort has returned. Fearing that Hogwarts' venerable Headmaster, Albus Dumbledore, is lying about Voldemort's return in order to undermine his power and take his job, the Minister for Magic, Cornelius Fudge, appoints a new Defense Against the Dark Arts teacher to keep watch over Dumbledore and the Hogwarts students. But Professor Dolores Umbridge's Ministry-approved course of defensive magic leaves the young wizards woefully unprepared to defend themselves against the dark forces threatening them and the entire wizarding community, so at the prompting of his friends Hermione and Ron, Harry takes matters into his own hands. Meeting secretly with a small group of students who name themselves "Dumbledore's Army," Harry teaches them how to defend themselves against the Dark Arts, preparing the courageous young wizards for the extraordinary battle that lies ahead.

Harry Potter and the Order of the Phoenix was released July 11th, 2007 and stars Daniel Radcliffe, Harry Melling, Jason Boyd, Richard Macklin, Kathryn Hunter, Miles Jupp, Fiona Shaw, Richard Griffiths. The film is directed by David Yates.