The Shipwreck Island series does not have a new book coming out soon. The latest book, Found (Book 4), was published in February 2017.
The first book in the Shipwreck Island series, Shipwreck Island, was published in August 2014.
The Shipwreck Island series primarily falls into the Action Adventure genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.