The Tapper Twins series does not have a new book coming out soon. The latest book, The Tapper Twins Go Viral (Book 4), was published in April 2017.
The first book in the Tapper Twins series, The Tapper Twins Go to War (with Each Other), was published in April 2015.
The Tapper Twins series primarily falls into the General Fiction genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.