The Indestructible series does not have a new book coming out soon. The latest book, Transcendent (Book 3), was published in June 2016.
The first book in the Indestructible series, Indestructible, was published in April 2016.
The Indestructible series primarily falls into the Dark Fantasy and Horror genres. This young adult series was written for ages 12-17, but can be enjoyed by adults too.