The book's a 208-page hardcover with a cover that's designed with the same style as the other Harry Potter film companion books, such as Harry Potter: Page to Screen , Harry Potter: The Creature Vault and Harry Potter: Magical Places . There are nice graphic elements and embossed gold text. Very classy.
From what I can see, this seems like the updated book to the character book from the collector's edition. I saw some pages of the book from the collector's edition and the layout looks different but content is the same. Also, there isn't much duplicated content from Harry Potter: Page to Screen.
This book focuses on the characters and their costumes, and each is given good coverage in terms of the space devoted, photographs, artworks and writeup. This book covers the human characters so you won't see any creatures of Dobby. There are also students from other schools, the teaching staff and of course Lord Voldemort and his evil gang of Death Eaters. There are also sections talking about the wands, and how they apply makeup, such as to make Harry disfigured when hit by the Stinging Jinx.
There are lots of information and I enjoyed reading about how they come up with the design and look for the characters.
It's an insightful book that all Harry Potter fans must have. Highly recommended.
(See more pictures of the book on my blog. Just visit my Amazon profile for the link.)