The Goblins series does not have a new book coming out soon. The latest book, Goblins on the Prowl (Book 2), was published in June 2015.
The first book in the Goblins series, Goblins in the Castle, was published in October 1992.
The Goblins 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.