The Empyrean
Next: Fourth Wing book 4, no date announced. The model points to a window from October 2027 to June 2028. That is a model, not an announcement.
The gaps between the earlier books were 6 and 14 months.
The author said in August 2026 the book is being written.
No date
Reading order
- Fourth Wing Released on 2 May 2023
- Iron Flame Released on 7 Nov 2023
- Onyx Storm Released on 21 Jan 2025
- Threshing DayCompanion Goes on sale 29 Sep 2026
- Fourth Wing book 4 No date
Edition on-sale dates
| Books and editions | Tier | Region | On-sale date |
|---|---|---|---|
| Threshing DayHardcover (first printing: silver-gilded edges) | Confirmed | US | 29 Sep 2026 |
| Threshing DayEbook | Listed | US | 29 Sep 2026 |
| Threshing DayAudiobook | Listed | US | 29 Sep 2026 |
| Threshing DayAudiobook, dramatised (GraphicAudio) | Listed | US | 13 Oct 2026 |
| Threshing DayHardcover | Pending | UK | Awaiting first check |
| Fourth Wing book 4Hardcover | No date | US | Awaiting first check |
Sources ledger
Fourth Wing book 4, Hardcover, US
No source carries a date for this book yet.
| Source | States | Agrees | Checked |
|---|---|---|---|
| Author site (rebeccayarros.com) | 7 Sep 2026 | ||
| Author Instagram | 7 Sep 2026 | ||
| Amazon | 7 Sep 2026 | ||
| Goodreads | 7 Sep 2026 |
Change log
- Threshing Day: On 16 Jul 2026, No date became Confirmed. Announced by the author with pre-orders live the same day.
- Fourth Wing book 4: On 1 Feb 2026, 2026-01 (retailer placeholder) became No date. Retailer placeholder withdrawn after the author said the date was impossible.