Thanks to USA TODAY we may have a first look at the trailer of Harry Potter and the Half Blood Prince which should be released this Tuesday.

Harry Potter Half Blood Prince Trailer
Dumbledore in the heat of the battle!
Voldemort had a childhood!
A new picture of Dumbledore has popped up to help us wait for the trailer:

What is Dumbledore thinking about?

The trailer for Harry Potter and the Half-Blood Prince is going to be released online this Tuesday (we will try our best to find it). And it will be screened in theaters in front of The Mummy: Tomb of the Dragon Emperor starting this Friday.
:)