The Keeper of Night series does not have a new book coming out soon. The latest book, The Empress of Time (Book 2), was published in October 2022.
The first book in the Keeper of Night series, The Keeper of Night, was published in October 2021.
The Keeper of Night series primarily falls into the Dark Fantasy and Manga genres. This young adult series was written for ages 12-17, but can be enjoyed by adults too.