There are 5 books in The Tale of Guinevere and King Arhur series.
The Tale of Guinevere and King Arhur series does not have a new book coming out soon. The latest book, Prince of Dreams (Book 5), was published in December 2003.
The first book in The Tale of Guinevere and King Arhur series, The Child Queen, was published in August 1994.
The Tale of Guinevere and King Arhur series primarily falls into the Fantasy genre.