Rebecca Yarros is working on the 4th 'Empyrean' novel. Here's everything the 'Fourth Wing' author has said about the book so far

Over a year after Rebecca Yarros released "Onyx Storm," readers are eagerly looking forward to the next book in the "Fourth Wing" universe.
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Rebecca Yarros’ New Fourth Wing Tease May Solve An Onyx Storm Ending Mystery

The latest Fourth Wingtease by Rebecca Yarros may solve an Onyx Storm ending mystery that has been haunting audiences since the book's release. The wait for the next book in The Empyrean ...
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'Onyx Storm' ends on a cliffhanger, but fans already have theories about the 4th book

"Onyx Storm" by Rebecca Yarros ended on a cliffhanger. Violet doesn't remember the last 12 hours, and Xaden and three other riders are missing. Violet's connection to the goddess Dunne may also become ...