The fifth book, Harry Potter and the Order of the Phoenix, is rumored to be even longer than the fourth. All we will reveal is that it will be a papery object and Harry will appear in it. It comes out on June 21st and is the most expensive children's book on the day it is realesed. If you'd ordered it earlier, it may not be as expensive as it is now. Now, some bookstores are selling it at $30 or even more.