The Juggernauts series does not have a new book coming out soon. The latest book, Liberator (Book 2), was published in June 2011.
The first book in the Juggernauts series, Worldshaker, was published in May 2010.
The Juggernauts series primarily falls into the Steampunk and Fantasy genres. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.