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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchThreshing Day is the latest Empyrean-world release promoted by Rebecca Yarros, but it is not the next main-series novel: Hachette explicitly labels it “NOT Book Four.” As of October 4, 2026, the official pages reviewed do not announce Book Four’s title or publication date.
Is Threshing Day the next Fourth Wing book?
It is a current release connected to the Empyrean world, not the fourth main-series novel. Rebecca Yarros’s official site promotes Threshing Day as available now, and the Hachette UK listing explicitly says it is not Book Four. That distinction matters if you are looking for the story that continues the main sequence rather than related material.
Hachette Australia lists an ebook date of September 30, 2026, and an Australian recommended retail price of A$24.99. Those details apply to that regional listing, not to every edition or market. Check local retailer listings for format and availability.
What is the main Empyrean reading order?
Rebecca Yarros’s official series page presents the main books in this order:
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- Fourth Wing
- Iron Flame
- Onyx Storm
Threshing Day is separate from that three-book sequence; it does not take the place of Book Four.
When is Fourth Wing Book Four coming out?
No Book Four title or release date is stated on the author’s official home or series pages reviewed for this update. That means there is no confirmed date to report from those sources; fan estimates and assumed publishing schedules should not be treated as announcements. For any new confirmation, check Yarros’s official site and series page.
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What other Empyrean-related release is listed?
Yarros’s coming-soon page lists Fourth Wing Graphic Novel: Volume 1 for April 6, 2027. This is an adaptation, not the next main novel, so it does not answer the Book Four release-date question.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
Is Threshing Day Fourth Wing Book 4?
No. Hachette’s listing explicitly says Threshing Day is not Book Four; it is a separate Empyrean-world release.
Rank #3
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Has Fourth Wing Book Four been given a title or release date?
The official author pages reviewed do not state a title or publication date for the fourth main-series book.
Quick Recap
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
