The Eighth Day series does not have a new book coming out soon. The latest book, The Morrigan's Curse (Book 3), was published in February 2016.
The first book in The Eighth Day series, The Eighth Day, was published in April 2014.
The Eighth Day series primarily falls into the Action Adventure and Fantasy genres. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.