The Fifties Chix series does not have a new book coming out soon. The latest book, Til the End of Time (Book 5), was published in May 2013.
The first book in the Fifties Chix series, Travel to Tomorrow, was published in November 2011.
The Fifties Chix 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.