Threshing Day: the book, the day and the website
Last updated: October 4, 2026
Spoilers: this page lists which characters narrate stories in the book and mentions that the in-world Threshing is when dragons choose riders. It does not summarize plot beyond that. Unofficial fan guide.
What is Threshing Day?
Threshing Day is a companion collection of 13 stories set around the Threshing, the ceremony in the Empyrean series where dragons choose their riders. It is numbered Empyrean 3.5 and was published on September 29, 2026 in the US and UK as a 224-page hardcover. It was announced on July 15, 2026, Conscription Day.
One caution: the Entangled Publishing listing showed October 4, 2026 when we checked. Every other source we found says September 29, and the listing looks like an unpopulated entry, so check your retailer.
The Empyrean series
Covers © Red Tower Books / Entangled Publishing, shown to identify the books.
Is it Book 4?
No. It does not continue the main story after Onyx Storm. Some pages call it the "fourth book" because it is the fourth published title, which is not the same as Book 4 of the series.
- Book 4: untitled and with no announced date. Yarros has said she is writing the fourth novel, and Parade reports five books are planned. A rumored 2027 date from an unverified screenshot is not confirmed.
- TV: Amazon MGM Studios announced a full series order for Prime Video in May 2026. Reports say it is in preproduction with no cast or premiere date announced.
Who narrates the stories?
Goodreads lists these 13 point-of-view characters:
Brennan, Mira, Xaden, Garrick, Dain, Bodhi, Imogen, Rhiannon, Sawyer, Ridoc, Liam, Sloane, Aaric.
Xaden's story, featuring his dragon Sgaeyl, has also been reported as available on Yarros's website.
Deluxe edition
The deluxe first edition is reported to include 16 color illustrations by Joe Requeza and to be sold in the US and Canada only.
The Threshing Day website
When people search for "the Threshing Day website", they usually mean Dragonkind, a free web experience at dragonkind.com made by Yarros Ink (Rebecca Yarros's company). It opened on October 1, 2026, the in-world Threshing, two days after the book came out. It is separate from the book. Our Dragonkind guide covers the retry wait, black and blue dragons and more, and our no-signup fan quiz is an option if you do not want to use an email account.
Threshing, in the series
In the books, the Threshing happens on October 1 each year, after the Presentation, when dragons that are open to bonding observe the cadets. Dragons choose; riders do not. Dragonkind borrows that date for its launch.
Sources
- Parade: Rebecca Yarros releases Threshing Day and Dragonkind
- Goodreads: Threshing Day (POV list, blurb)
- Rising Shadow: Threshing Day is coming September 29 (not Empyrean Book 4)
- Empyrean Riders: Threshing Day release date and POVs (fan wiki)
- Entangled Publishing: Threshing Day listing
- Screen Rant: Amazon officially orders the Fourth Wing series
- The Book Feed: Fourth Wing Book 4
Fan guide, not affiliated with the author, her publisher or Dragonkind.