The Unnaturalists series does not have a new book coming out soon. The latest book, The Tinker King (Book 2), was published in February 2014.
The first book in The Unnaturalists series, The Unnaturalists, was published in August 2012.
The Unnaturalists series primarily falls into the Alternative History and Fantasy genres. This young adult series was written for ages 12-17, but can be enjoyed by adults too.