The Gameknight999 series does not have a new book coming out soon. The latest book, Confronting the Dragon (Book 3), was published in October 2014.
The first book in the Gameknight999 series, Invasion of the Overworld, was published in July 2013.
The Gameknight999 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.