Inar from Germany has sent us four new Harry Potter and the Prisoner of Azkaban movie posters with themed character poses of the main characters:
Note: The images below have been superceded by larger English versions available here.
These were featured on AOL Germany, according to Inar. We'll try to get larger pictures soon.
Update: Take a time machine back to the Chamber of Secrets and check out the character posters for that movie, courtesy Veritaserum.