Book News
Empyrean Book 4: Release Date and What We Know
Quick answer
No, Empyrean Book 4 does not have a release date as of October 2026. Rebecca Yarros has confirmed she is writing it, but Entangled/Red Tower has not announced a title, cover or publication date. What has come out since Onyx Storm (January 2025) is Threshing Day (September 29, 2026), a companion collection of 13 short stories numbered Empyrean 3.5. The official Threshing Day site is explicit that it is “not the continuation of Violet and Xaden’s story after Onyx Storm” — that is Book 4’s job, and Book 4 is still being written.
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If you finished Onyx Storm and searched “is there a book after Onyx Storm,” the honest, slightly annoying answer is: sort of. Threshing Day exists and it is good, but it is a side story, not the sequel. Here is exactly what is confirmed, what is a reasonable guess, and what to read while you wait.
What's Confirmed
Confirmed Threshing Day is out (September 29, 2026, Entangled). It collects 13 stories told by riders other than Violet, each set on the day their dragon chose them, including one from Xaden's point of view. The official Threshing Day site calls it “a companion collection, not the continuation of Violet and Xaden’s story after Onyx Storm.”
Confirmed Book 4 is being actively written. Announcing her fall 2026 tour, Yarros said the season was “wildly busy between releases and writing book four” (Winter Is Coming).
Confirmed The Empyrean is planned as five main novels. Three are out — Fourth Wing (May 2023), Iron Flame (November 2023), Onyx Storm (January 2025) — so Book 4 and Book 5 remain, with Threshing Day sitting between them as 3.5.
Not confirmed Any Book 4 title, cover, or release date. The publisher has not listed it for preorder as of October 2026. Fan-site guesses of 2027 or 2028 are guesses, not announcements.
Timeline
| Date | What happened |
|---|---|
| May 2, 2023 | Fourth Wing published. Book 1. |
| November 7, 2023 | Iron Flame published. Book 2. |
| January 21, 2025 | Onyx Storm published. Book 3; ends on a cliffhanger. |
| September 29, 2026 | Threshing Day published. Companion collection, Book 3.5; not the main-story sequel. |
| Not announced | Book 4 — confirmed in progress, no title or date. |
| Not announced | Book 5 — the planned finale of the five-book arc. |
What It Means for Readers
If you came here hoping to preorder Book 4 today, there is nothing to preorder yet. If you have not read Threshing Day, it is a reasonable way to spend time in Basgiath while you wait, but go in knowing it will not move Violet and Xaden's story forward — it revisits the world through other riders instead. Full series order, including where Threshing Day fits and a printable checklist, is on our Empyrean series in order page.
Worth knowing: Yarros also has a Prime Video series in development (ordered May 2026, Meredith Averill showrunning), which is a separate project from the book release and will not affect when Book 4 comes out.
What to Read While You Wait
Three picks if Basgiath withdrawal is setting in: The Serpent and the Wings of Night by Carissa Broadbent for the closest tone match, Fireborne by Rosaria Munda if you want dragons without the wait for spice, and Yarros's own earlier military-romance novels if you want more of her voice specifically. Our full books like Fourth Wing list has 17 more options grouped by what you loved.
FAQ
Is there a book after Onyx Storm?
Yes, but it is not Book 4. Threshing Day, a companion collection of 13 stories numbered Empyrean 3.5, came out September 29, 2026. It is explicitly not the continuation of Violet and Xaden's story. Book 4 is being written; it has no title or date yet.
Is there another book after Onyx Storm, a real Book 4?
Yes. Rebecca Yarros has confirmed she is writing Book 4, the real sequel to Onyx Storm. As of October 2026 it has no announced title, cover or release date.
What's after Onyx Storm in the Empyrean series?
First, Threshing Day (September 29, 2026), a prequel-flavored companion collection told by 13 side characters. Then Book 4, still being written, which will pick up the main Violet-and-Xaden story.
When does the Empyrean Book 4 come out?
No release date has been announced as of October 2026. Entangled/Red Tower has not listed it for preorder. Given the gap between Iron Flame (Nov 2023) and Onyx Storm (Jan 2025), a 2027 release would fit the pattern, but that is our estimate, not a confirmed date.
What is the title of Empyrean Book 4?
No title has been announced. Readers sometimes see “Book 4” used as a placeholder on retailer sites; that is not an official title.
Is the Empyrean series finished after Book 4?
No. Rebecca Yarros has said the main Empyrean series is planned as five novels, so a Book 5 is expected to follow Book 4.
Bookmark this page or the series order guide — we update both the day Entangled announces anything.
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