The Dragon's Guide series does not have a new book coming out soon. The latest book, A Dragon's Guide to Making Perfect Wishes (Book 3), was published in March 2017.
The first book in the Dragon's Guide series, A Dragon's Guide to the Care and Feeding of Humans, was published in March 2015.
The Dragon's Guide series primarily falls into the Fantasy genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.