Rupert Grint (L) who plays Ron, Emma Watson (C) who plays Hermione, and Daniel Radcliffe (R) who plays Harry Potter in 'Harry Potter and the Goblet of Fire' attend a photocall in London, October 25, 2005. 'Harry Potter and the Half-Blood Prince,' the sixth installment of the lucrative franchise, will come out in theaters on November 21, 2008. REUTERS/Toby Melville 

Warner Bros. has announced that the film version of Harry Potter #6, Harry Potter and the Half-Blood Prince, will be released to theaters on Nov. 21, 2008, according to Reuters.