Sarah J. Maas is returning to Prythian with A Court of Splintered Harmony, the sixth book in the bestselling A Court of Thorns and Roses series.

The new novel is officially scheduled for October 27, 2026, and is described by Bloomsbury as The Valkyrie Cycle, Movement I. The book is currently available for pre-order, but it has not yet been released.

That makes this a particularly interesting moment for ACOTAR readers. We know the official title, release date, format details, and the publisher’s story description—but many details about the novel are still unknown.

Here is everything that has been officially revealed so far.

A Court of Splintered Harmony Release Date

A Court of Splintered Harmony will be released on October 27, 2026.

The book is being published by Bloomsbury and is currently available to pre-order in multiple formats. The U.S. hardcover edition is listed at 352 pages, while ebook and audiobook editions are also planned for the publication date.

Release date: October 27, 2026
Author: Sarah J. Maas
Series: A Court of Thorns and Roses
Book: #6
Series arc: The Valkyrie Cycle, Movement I
Publisher: Bloomsbury
Length: 352 pages
Genres: Fantasy, romance, romantasy

Pre-Order

What Is A Court of Splintered Harmony About?

The official synopsis places the story in the aftermath of the devastating Hybern War.

Prythian is still trying to recover, while the political divisions between its courts remain dangerous. At the same time, Koschei the Deathless is becoming a more immediate threat.

According to Bloomsbury, Koschei has been imprisoned for thousands of years, but his influence is spreading. Powerful allies are gathering around him, with the human lands once again caught in the conflict.

The Night Court cannot simply ignore what is happening.

But the danger is not only coming from outside.

The rulers and protectors of the Night Court are dealing with betrayals, revelations, and divisions that threaten to pull their alliances apart. The official description suggests that repairing those relationships will be just as important as confronting Koschei.

The central question is whether the characters can find their way back to one another before the threat surrounding Prythian becomes impossible to stop.

Who Is in A Court of Splintered Harmony?

Sarah J. Maas has not publicly revealed every major character role or point-of-view detail for the novel.

However, the official synopsis confirms that the story involves the Night Court, Koschei the Deathless, and the wider political situation across Prythian.

Because this is connected to the Valkyrie Cycle, readers are naturally watching characters such as Nesta, Cassian, Azriel, Gwyn, and the other Valkyries closely.

However, it is important to separate confirmed information from fan theories.

Until Maas or the publisher confirms a character’s role, predictions about the main POVs, romances, or pairings should be treated as speculation rather than established facts.

Is A Court of Splintered Harmony ACOTAR 6?

Yes.

A Court of Splintered Harmony is officially listed as the sixth book in the A Court of Thorns and Roses series. Bloomsbury also identifies it as The Valkyrie Cycle, Movement I.

The series currently includes:

1. A Court of Thorns and Roses
2. A Court of Mist and Fury
3. A Court of Wings and Ruin
4. A Court of Frost and Starlight
5. A Court of Silver Flames
6. A Court of Splintered Harmony
7. A Court of Forgotten Melody

Bloomsbury already lists A Court of Forgotten Melody as the next title in the series, scheduled for January 12, 2027.

What Does “The Valkyrie Cycle” Mean?

The official subtitle for A Court of Splintered Harmony is:

The Valkyrie Cycle, Movement I

That wording is significant because it suggests that this new book is part of a larger connected story rather than simply another standalone continuation of the original five-book arc.

The publisher has not yet provided a complete explanation of exactly how the Valkyrie Cycle will be structured.

For now, the safest conclusion is that A Court of Splintered Harmony begins a new movement within the larger ACOTAR storyline.

The Koschei Storyline

One of the biggest confirmed story threads heading into the book is Koschei the Deathless.

Koschei has been an important unresolved threat in the ACOTAR world, and the official synopsis makes it clear that his return is central to the new novel.

He is described as being bound to a mountain lake for millennia, but his influence is now spreading across the Fae territories.

The publisher also says that powerful allies are gathering around him as the conflict expands toward the human lands.

That means readers are entering the new book with a major unresolved antagonist already established.

Will There Be Romance?

Romance is an official part of the book’s positioning.

Bloomsbury describes A Court of Splintered Harmony as a story of romance, danger, and intrigue, alongside its fantasy and political conflicts.

However, the publisher has not publicly confirmed every romantic storyline that readers may be expecting.

That distinction matters.

There are already many theories surrounding the relationships between ACOTAR characters, but theories should not be presented as confirmed plot information before the book is released.

A Court of Splintered Harmony Audiobook

An audiobook edition is planned for the same release date.

Current edition information lists an audiobook narrated by Elizabeth Evans, with a publication date of October 27, 2026.

Readers searching for the audiobook should therefore expect it to become available alongside the October 27 release.

A Court of Splintered Harmony Editions

The book is being released in several formats.

Current listings include:

• Hardcover Pre-Order Now
• Ebook Pre-Order Now

Bloomsbury’s U.S. listing confirms the hardcover and ebook editions, while international listings include paperback editions as well.

Different countries may have different editions, prices, ISBNs, and publication arrangements.

Is There an Excerpt or Preview?

Readers are already searching for a preview, sample, and excerpt of A Court of Splintered Harmony.

At the moment, readers should be careful with unofficial material circulating online.

A genuine excerpt should come from an authorized source such as the publisher, author, or an official bookseller.

We will update this section if an official preview becomes available.

What We Know vs. What We Don’t Know

Confirmed

• The title is A Court of Splintered Harmony.
• Sarah J. Maas is the author.
• It is ACOTAR book #6.
• The release date is October 27, 2026.
• It is published by Bloomsbury.
• It is part of The Valkyrie Cycle.
• It is designated Movement I.
• Koschei the Deathless is central to the official story description.
• The Night Court remains an important part of the story.
• A 352-page edition is listed.
• Audiobook, ebook, hardcover, and paperback editions are being released.

Still unknown

• The complete POV lineup
• The complete character list
• The full plot
• The ending
• The exact role of every Valkyrie
• Which romantic relationships will be central
• The full extent of Koschei’s plans
• What happens to the major characters by the end

Those details should be confirmed rather than presented as fact before publication.

When Does A Court of Splintered Harmony Come Out?

A Court of Splintered Harmony comes out on October 27, 2026.

As of now, the book is still a pre-release title and is available for pre-order.

For readers waiting for the next ACOTAR story, October 27 is the date to watch.

What Comes After A Court of Splintered Harmony?

The next officially listed ACOTAR title is A Court of Forgotten Melody, which Bloomsbury and Sarah J. Maas’s official website currently list for January 12, 2027.

That makes the release schedule particularly interesting for readers following the new Valkyrie Cycle.

Final Thoughts

A Court of Splintered Harmony is shaping up to be one of the biggest fantasy releases of 2026.

For now, the most important confirmed pieces are clear: Sarah J. Maas is returning to Prythian, the story centers on a growing threat from Koschei and fractures within the Night Court, and the novel launches a new Valkyrie Cycle with its October 27 release.

But there is still plenty we do not know.

And that is where things get interesting.

As official information, previews, and eventually the book itself become available, this page will be updated with the latest confirmed details.

About the Author

Sarah J. Maas is the #1 bestselling author of the Court of Thorns and Roses, Throne of Glass, and Crescent City series. Her books have sold more than seventy-five million copies and are published in forty languages.

sarahjmaas.com
facebook.com/theworldofsarahjmaas
instagram.com/sarahjmaas

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