The Wither Trials series does not have a new book coming out soon. The latest book, The Battle (Book 3), was published in August 2016.
The first book in The Wither Trials series, The Portals, was published in August 2016.
The Wither Trials 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.