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UPDATE: Check out the new trailer below ...

Cinematical has just received this exclusive screengrab from the brand spanking new Harry Potter and the Half-Blood Princetrailer, which premieres online tonight at around 9pm EST over on AOL Moviefone. It's taken awhile for this latest Harry Potter installment to reach theaters (after the original release date was pushed from November '08 to July '09), but knowing the boy wizard and his wild cohorts, this sixth (!) adventure will definitely be worth the wait.

Directed by David Yates, Harry Potter and the Half-Blood Prince finds friends Harry, Ron and Hermione a bit older, wiser and, well, more attracted to the opposite sex. As Harry begins his sixth year at Hogwarts School of Witchcraft and Wizardry, our hero discovers a mysterious book that helps him learn more about the evil Lord Voldemort's dark past.

Harry Potter and the Half-Blood Prince
will arrive in conventional theaters and on IMAX screens on July 15, two days earlier than the previously scheduled July 17. Check out a larger version of the above image in our official Half-Blood Prince gallery below ... and make sure you tune in later on tonight for that new trailer.