The Buster series does not have a new book coming out soon. The latest book, Buster the Very Shy Dog and the Great Bone Game (Book 4), was published in June 2016.
The first book in the Buster series, Buster the Very Shy Dog, was published in April 2001.
The Buster series primarily falls into the General Fiction genre. This series was written for ages 5-7 and is a good choice for children just learning to read.