There are 4 books in the Duchess for All Seasons series.
The Duchess for All Seasons series does not have a new book coming out soon. The latest book, The Autumn Duchess (Book 4), was published in October 2018.
The first book in the Duchess for All Seasons series, The Winter Duchess, was published in November 2017.
The Duchess for All Seasons series primarily falls into the Historical Romance genre.