The Maggie Malone series does not have a new book coming out soon. The latest book, Maggie Malone Makes a Splash (Book 3), was published in May 2015.
The first book in the Maggie Malone series, Maggie Malone and the Mostly Magical Boots, was published in May 2014.
The Maggie Malone 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.