There are 3 books in the Marion Zimmer Bradley's Avalon series.
The Marion Zimmer Bradley's Avalon series does not have a new book coming out soon. The latest book, Sword of Avalon (Book 3), was published in December 2009.
The first book in the Marion Zimmer Bradley's Avalon series, Ancestors of Avalon, was published in July 2004.
The Marion Zimmer Bradley's Avalon series primarily falls into the Fantasy genre.