Producers just announced that J.K. ROWLING's last Potter book -- HARRY POTTER AND THE DEATHLY HALLOWS -- will be split into two parts. The first film is slated for release in November 2010, with part two following in May 2011. Producers and author agreed that unlike every other book, you cannot remove any elements of this book, so we shall see it all for full closure.
David Yates, who directed ORDER OF THE PHOENIX and is currently working on the HALF-BLOOD PRINCE, will direct both THE DEATHLY HALLOWS films. All the key stars are also onboard.
The two final Potter films will be shot concurrently, like The Lord of the Rings trilogy. (Side note -- The Hobbitt starts filming next year with two live-action movies set for back-to-back shooting also.)
Harry Potter and the Half-Blood Prince started filming last September and word from star Daniel Radcliffe is "...brilliant...the funniest."