There are 3 books in the Seven Deadly Sins series.
The Seven Deadly Sins series does not have a new book coming out soon. The latest book, The Duke's Night of Sin (Book 3), was published in December 2010.
The first book in the Seven Deadly Sins series, To Sin with a Stranger, was published in November 2008.
The Seven Deadly Sins series primarily falls into the Historical Romance genre.