The Countryside series does not have a new book coming out soon. The latest book, The Tears of Adina (Book 2), was published in September 2015.
The first book in the Countryside series, The Book of the Wise, was published in July 2012.
The Countryside 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.