The Changelings series does not have a new book coming out soon. The latest book, In a Dark Land (Book 2), was published in October 2017.
The first book in the Changelings series, The Changelings, was published in September 2016.
The Changelings series primarily falls into the Action Adventure and Fantasy genres. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.