One of the main selling points of the Half-Blood Prince Blu-Ray was the revealing of the first bit of footage from Harry Potter and the Deathly Hallows: Part 1. However, in the age of the internet and camera phones things don’t stay purely on discs for long, and the footage has made it’s way online. It’s not the best quality so hopefully Warner Bros released it in HD in the near future.
It’s more of a teaser trailer for the two films as it contains footage from both. We see Harry, Ron and Hermione in the middle of a busy London street, the trio battling in a forest, and we get our first look at Bill Nighy as Rufus Scrimgeour.
The image above is the second official image released for the film, and features Harry holding a wand as he searches a house, presumably Grimmauld Place which we saw at the beginning of Order of the Phoenix.