ign.com
Jul 16, 2026
Fourth Wing Author Rebecca Yarros Announces Threshing Day, New Book in Empyrean Series
AI-summarised brief · reviewed before publication
Rebecca Yarros, author of the bestselling fantasy romance series The Empyrean, announced Threshing Day, a new book featuring 13 stories from fan-favorite characters during their pivotal dragon-earning day. Set for release on September 29, 2026, the collection includes Xaden’s long-requested story and 16 original artworks. The title was revealed on July 15, the fictional Conscription Day, and preorders pushed it to #2 on Amazon. Yarros confirmed she is still writing book 4, while a TV adaptation of Fourth Wing is in development.
💡 Why It Matters
- · Threshing Day gives readers deeper insight into beloved characters and expands the world of The Empyrean in a way that satisfies long-time fans and newcomers alike.
- · By centering on a key event in the series’ lore, Yarros is building anticipation for future books and enriching the universe ahead of the TV adaptation.