From their Twitter account:
The new HARRY POTTER AND THE DEATHLY HALLOWS trailer will be unveiled online this Monday at 4pm PST!
The trailer will debut in the cinema on June 30, playing in front of The Twilight Saga: Eclipse.
We will have any further information regarding this for you when it becomes available, and will of course have the trailer right here when it is released.
Harry Potter and the Deathly Hallows - Part 1 is scheduled for November 19, and Harry Potter and the Deathly Hallows - Part 2 comes out July 15, 2011.
UPDATE: Also, for those of you who hope to catch the trailer on your television, you can check out ABC Family's new show Huge which will debut the trailer between 9 - 10 pm (ET/PT) on Monday night, June 28th.