Pre-order the Harry Potter and the Deathly Hallows (Book 7) (Hardcover) for $18.89 (reg. $34.99). The final chapter in the greatest children's series to ever be published promises twists and turns to thrill fans. The book is set to be released on July 21, 2007. Amazon has put in place a pre-order system that assures buyers that the book will be delivered to everyone, who orders in advance.