There are 4 books in the Once Upon a Curse series.
The Once Upon a Curse series does not have a new book coming out soon. The latest book, Parting Worlds (Book 4), was published in November 2019.
The first book in the Once Upon a Curse series, Gathering Frost, was published in February 2015.
The Once Upon a Curse series primarily falls into the Action Adventure and Fantasy genres. This young adult series was written for ages 12-17, but can be enjoyed by adults too.