The Maggie & Abby series does not have a new book coming out soon. The latest book, Maggie & Abby and the Shipwreck Treehouse (Book 2), was published in August 2019.
The first book in the Maggie & Abby series, Maggie & Abby's Neverending Pillow Fort, was published in April 2018.
The Maggie & Abby series primarily falls into the Fantasy genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.