There are 4 books in the Queen of the Damned series.
The Queen of the Damned series does not have a new book coming out soon. The latest book, Brimstone Nightmares (Book 4), was published in January 2019.
The first book in the Queen of the Damned series, Lucifer's Daughter, was published in February 2018.
The Queen of the Damned series primarily falls into the Dark Fantasy genre.