The Inch and Roly series does not have a new book coming out soon. The latest book, Inch and Roly and the Sunny Day Scare (Book 3), was published in May 2014.
The first book in the Inch and Roly series, Inch and Roly Make a Wish, was published in September 2012.
The Inch and Roly 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.