There are 2 books in the Fitzwilliam Legacy series.
The Fitzwilliam Legacy series does not have a new book coming out soon. The latest book, New Year Resolutions (Book 2), was published in September 2013.
The first book in the Fitzwilliam Legacy series, Seasonal Disorder, was published in September 2013.
The Fitzwilliam Legacy series primarily falls into the Historical Romance genre.