The Jessica Darling series does not have a new book coming out soon. The latest book, Perfect Fifths (Book 5), was published in April 2009.
The first book in the Jessica Darling series, Sloppy Firsts, was published in September 2001.
The Jessica Darling series primarily falls into the Contemporary Romance genre. This young adult series was written for ages 12-17, but can be enjoyed by adults too.