The Zoe & Chloe series does not have a new book coming out soon. The latest book, Out to Lunch (Book 2), was published in April 2008.
The first book in the Zoe & Chloe series, Zoe and Chloe on the Prowl, was published in July 2007.
The Zoe & Chloe series primarily falls into the General Fiction genre. This young adult series was written for ages 12-17, but can be enjoyed by adults too.