The official name is: Harry Potter Page to Screen: The Complete Filmmaking Journey. And while it's currently up at Amazon.com for pre-order, it's not set to make it's debut till 25-Oct-2011.
It's a hardcover book featuring 540 pages, available through Harper Design, and is listed there at $47.25
No images but the cover are available yet, but be sure to keep a look out for more. For those interested, check it out HERE.