Editorial Planeta ya ha confirmado la llegada de El día de la Trilla (Threshing Day), el nuevo libro de Rebecca Yarros ambientado en el universo Empíreo. Te contamos su fecha de lanzamiento, la portada en español y todas las novedades confirmadas.

Threshing Day: Spanish cover, release date, and everything we know

Threshing Day: Spanish Cover, Release Date, and Everything We Know

  • Spanish Title: El día de la Trilla
  • Original Title: Threshing Day
  • Author: Rebecca Yarros
  • Series: Empyrean
  • Publisher in Spain: Planeta
  • Release Date in Spain: September 30, 2026
  • Format: Collection of 13 illustrated short stories
  • Special Edition: Yes, with a limited edition with sprayed edges

It's official. El día de la Trilla (Threshing Day), Rebecca Yarros's anticipated companion book to the Empyrean universe, will arrive in Spain on September 30, 2026, published by Editorial Planeta.

Originally known as Threshing Day, this new release is not the fourth book in the series, but a collection of short stories that will allow us to return to Basgiath from new perspectives. In this article, you will find the Spanish cover, release date, and everything we know so far.

Official cover of Threshing Day, Rebecca Yarros' new book set in the Empyrean universe.

What is El día de la Trilla (Threshing Day)?

For weeks, Rebecca Yarros dropped small hints on her social media that set off alarms among readers. Theories soon emerged: some thought she would announce the long-awaited fourth Empyrean book, while others bet on news about the television adaptation of Fourth Wing.

Finally, the author cleared all doubts by officially presenting Threshing Day, a new book set in the Empyrean universe that, from the beginning, made one thing very clear:

It is not the fourth book in the series.

Instead of continuing the main story, Threshing Day will allow us to return to Basgiath from a completely different perspective while Rebecca Yarros continues to work on the eagerly anticipated fourth Empyrean novel.

What is Threshing Day about?

Threshing Day will be a collection of thirteen short stories set during one of the most important moments in the Empyrean universe.

The Threshing is the test where Rider Quadrant cadets attempt to bond with a dragon... or die trying.

It's no coincidence that the original cover features the phrase "DON'T DIE", a warning that perfectly summarizes the danger and importance of that day for any aspiring rider.

Instead of following a single story, Rebecca Yarros will bring together thirteen independent short stories, all set during the same event, but narrated from different perspectives, thus expanding the Empyrean universe like never before.

We will reunite with beloved characters

Rebecca Yarros has confirmed that the stories will feature some of the readers' favorite characters.

But they won't be alone.

Dragons will also play a leading role in these stories, something that has particularly excited the fandom, who have been asking to know much more about them for years.

For now, the author has not revealed the complete cast of characters, so it is very likely that she will share new details in the coming months.

Yes, there will be a Xaden story

One of the most exciting pieces of news for readers is the confirmation that Xaden Riorson will star in one of the short stories.

In addition, following the tradition of previously published special chapters, Rebecca Yarros has explained that this story will also be available later on her website.

A special edition for collectors

In addition to the standard edition, Threshing Day will feature a special edition that will include sixteen original full-color illustrations, created by artist Joe Requeza.

In Spain, Editorial Planeta has also confirmed a limited edition with sprayed edges, news that has been enthusiastically received by collectors of the series.

Rebecca Yarros is still writing book four

One of the biggest concerns for readers was whether this new project would delay the continuation of the main story.

Rebecca Yarros herself wanted to reassure the fandom by explaining that Threshing Day was created as a way to return to Basgiath while she continues writing the fourth installment of Empyrean.

In other words, book four is still in progress. This new release does not replace the continuation of the series, but expands its universe while the next novel arrives.

The Spanish cover is now official

Editorial Planeta has already presented the cover of El día de la Trilla, which maintains the essence of the original Threshing Day design.

With a sober style dominated by black and white, the illustration shows dragons, clouds, and a large circular emblem reminiscent of the bond between riders and dragons. A different image from the main novels, but one that fits perfectly within the universe created by Rebecca Yarros.

Limited edition with sprayed edges of El día de la Trilla (Threshing Day), Rebecca Yarros' new book published by Editorial Planeta

When does Threshing Day come out in Spanish?

The original edition of Threshing Day will arrive in bookstores on September 29, 2026.

In Spain, Editorial Planeta will publish El día de la Trilla on September 30, 2026, both in a standard edition and a limited edition with sprayed edges.

Our opinion

We think it's a fantastic idea.

One of the biggest appeals of Empyrean has never solely been Violet and Xaden's story.

Basgiath is full of fascinating characters, dragons with incredible personalities, and moments that we have only briefly glimpsed from a single perspective.

If Rebecca Yarros uses these thirteen stories to expand the world she has built, El día de la Trilla can become the perfect complement for all those who are not yet ready to say goodbye to Basgiath while waiting for the fourth book.

And, to be honest…

Any excuse to fly with dragons again will always be welcome.

Frequently Asked Questions about El día de la Trilla (Threshing Day)

Is El día de la Trilla Empyrean book 4?

No. Rebecca Yarros has explicitly confirmed that it is not the fourth main novel in the series, but a collection of short stories set in the same universe.

How many stories does it include?

The book will gather 13 short stories, all set during the Threshing.

Will there be a Xaden story?

Yes. Rebecca Yarros has confirmed that Xaden will star in one of the short stories included in the book.

When will it be released?

The original edition of Threshing Day will be published on September 29, 2026.

The Spanish edition, El día de la Trilla, will arrive on September 30, 2026 from Editorial Planeta.

Will there be a special edition?

Yes. In addition to the standard edition, Planeta will publish a limited edition with sprayed edges for readers and collectors of the series.

Last updated (July 22, 2026): We have updated this article with the official Spanish cover, the release date confirmed by Editorial Planeta, and new details about the limited edition.

Where to buy or pre-order Threshing Day?

If you're eager to return to Basgiath, El día de la Trilla is already available for pre-order at bookstores and online stores.

You can find it at establishments like Casa del Libro, FNAC, Amazon, El Corte Inglés or consult availability directly through the Editorial Planeta website.

Have you already pre-ordered El día de la Trilla?

While September 30 approaches, you can continue exploring the Empyrean universe with our collection of candles inspired by the series.

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