The Library of Doom series does not have a new book coming out soon. The latest book, Thesaurus Rex (Book 30), was published in January 2016.
The first book in the Library of Doom series, The Beast Beneath the Stairs, was published in January 2007.
The Library of Doom series primarily falls into the General Fiction genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.