The Sal and Gabi series does not have a new book coming out soon. The latest book, Sal and Gabi Fix the Universe (Book 2), was published in May 2020.
The first book in the Sal and Gabi series, Sal and Gabi Break the Universe, was published in March 2019.
The Sal and Gabi series primarily falls into the Science Fiction and Fantasy genres. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.