There are 3 books in the Chronicles of the Martlet series.
The Chronicles of the Martlet series does not have a new book coming out soon. The latest book, The Assassin's Twisted Path (Book 3), was published in June 2018.
The first book in the Chronicles of the Martlet series, The War Enders Apprentice, was published in October 2017.
The Chronicles of the Martlet series primarily falls into the Fantasy genre.