There are 3 books in The Wraeththu Histories series.
The Wraeththu Histories series does not have a new book coming out soon. The latest book, The Ghosts of Blood and Innocence (Book 3), was published in June 2006.
The first book in The Wraeththu Histories series, The Wraiths of Will and Pleasure, was published in May 2003.
The Wraeththu Histories series primarily falls into the Fantasy genre.