What We Actually Know About Book 10
Book 10 of the Keeper of the Lost Cities series by Shannon Hale and Daniel Naumer does not have an official release date yet. The last published book, Lost in Time (Book 9), came out in May 2023. After that, there was a noticeable gap, and neither author has publicly confirmed when Book 10 will arrive. That gap has frustrated readers, and honestly, I get it. You finish one book and you want the next one immediately. As of now, no one with inside knowledge has given a concrete answer. Shannon Hale has been active on social media but hasn't shared a firm timeline for the tenth installment. She has mentioned in passing that she's been working on projects outside this series, which may explain the delay. Daniel Naumer has remained quieter on the subject entirely. The publisher, HarperCollins, has not listed a release date on their end either. Here's the thing people miss when they're tracking this: Shannon Hale has been open about struggling with the scale of the story. The series has grown into something massive, and wrapping up all the plot threads at the level it deserves takes longer than a standard publishing schedule. That's not a excuse—it's just the reality. Some fans have speculated the book might drop sometime in 2025, but that's pure speculation based on nothing more concrete than hope and the typical two-to-three-year gap between previous books.
I remember reading updates from fans who were convinced they had insider info, only to find out months later that the person who posted it had no actual source. It's easy to get caught up in those rumors. The safe approach is to wait for an announcement from HarperCollins or an official statement from either author. Until then, any date you see is a guess at best. If you want to stay in the loop, the most reliable sources are Shannon Hale's official website, her verified social media accounts, and the publisher's announcements. Those are the only places where confirmed information will appear first. Anything on Reddit, TikTok, or fan forums is likely to be speculation until something reaches those channels.
