The Denim Diaries series does not have a new book coming out soon. The latest book, Lying to Live (Book 6), was published in September 2012.
The first book in the Denim Diaries series, 16 Going on 21, was published in September 2008.
The Denim Diaries 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.