The Dalemark Quartet series does not have a new book coming out soon. The latest book, The Crown of Dalemark (Book 4), was published in October 1995.
The first book in The Dalemark Quartet series, Cart and Cwidder, was published in May 1975.
The Dalemark Quartet series primarily falls into the Fantasy genre. This young adult series was written for ages 12-17, but can be enjoyed by adults too.