There are 3 books in The Fin Butler Adventures series.
The Fin Butler Adventures series does not have a new book coming out soon. The latest book, Fin Butler and the Reluctant Mermaid (Book 3), was published in November 2016.
The first book in The Fin Butler Adventures series, Fin Butler and the Clockwork Phoenix, was published in December 2015.
The Fin Butler Adventures series primarily falls into the Fantasy genre.