The official British web site for Harry Potter and the Half-Blood Prince has been updated with the release dates for the movie. Release dates range from November 19th in Egypt and Belgium to December 19th in Turkey. The official release date in the U.S. and the UK is November 21st.
Thanks to BlogHogwarts for the news.
UPDATE: Just days after this was posted, Warner Bros. announced it was pushing back the release of Half-Blood Prince to summer 2009.