Harry Potter and the Half-Blood Prince is a 2008 fantasy adventure film, based on the novel by J. K. Rowling. It is the sixth film in the popular Harry Potter films series. Production is in the post-production stage. David Yates, the director of the fifth film, Harry Potter and the Order of the Phoenix, is returning as director for this film. David Heyman and David Barron are producing the film, and Steve Kloves, though he did not write the fifth film, has returned as screenwriter for this instalment. Filming began on September 24, 2007 and the film was originally scheduled for a UK and US release on November 21, 2008, but it will finally be on the screen diring summer 2009 Like the previous film, the sixth film will be simultaneously released in regular theatres and IMAX 3-D.Editing of the movie has been completed and the finished product is now on its way.
In France, the film will be released on July 15th.

Here is the trailer:

Voldemort is tightening his grip on both the Muggle and wizarding worlds and Hogwarts is no longer the safe haven it once was. Harry suspects that dangers may even lie within the castle, but Dumbledore is more intent upon preparing him for the final battle that he knows is fast approaching. Together they work to find the key to unlock Voldemort's defenses and, to this end, Dumbledore recruits his old friend and colleague, the well-connected and unsuspecting bon vivant Professor Horace Slughorn, whom he believes holds crucial information. Meanwhile, the students are under attack from a very different adversary as teenage hormones rage across the ramparts. Harry finds himself more and more drawn to Ginny, but so is Dean Thomas. And Lavender Brown has decided that Ron is the one for her, only she hadn't counted on Romilda Vane's chocolates! And then there's Hermione, simmering with jealousy but determined not to show her feelings. As romance blossoms, one student remains aloof. He is determined to make his mark, albeit a dark one. Love is in the air, but tragedy lies ahead and Hogwarts may never be the same again.