The Madly series does not have a new book coming out soon. The latest book, Madly & the Jackal (Book 3), was published in June 2012.
The first book in the Madly series, Madly, was published in June 2011.
The Madly series primarily falls into the Paranormal Romance genre. This young adult series was written for ages 12-17, but can be enjoyed by adults too.