Some people would like to get rid of dust jackets — those glossy outer covers of hardcover books. But doing so would be terrible for casual book readers. By Eric Levenson. July 26, 2013.

A: Specifically I want to not just make a nice-looking book, I want to change how hardcover books are made, which hasn’t undergone any type of evolution in 20 years or more.

Order of the Phoenix is the latest illustrated edition, and it's also the longest. This massive tome is 576 pages long. That shouldn't be a surprise, as the books grew in length as the series went on.