There are 5 books in the Shadows of the First Trine series.
The Shadows of the First Trine series does not have a new book coming out soon. The latest book, Undead Inheritance (Book 4), was published in January 2020.
The first book in the Shadows of the First Trine series, The Harrowing Path, was published in March 2021.
The Shadows of the First Trine series primarily falls into the Epic Fantasy and Heroic Fantasy / Sword & Sorcery genres.