"4C Untitled Flatiron Nonfiction Summer 2023" is available for preorder with MacMillan Publishers. On Amazon, the hardcover book is currently ranked as the #1 bestseller in Photography & Video. All that's known about the book is that it will be released on July 9, 2023, it's a biography or memoir, and it's 544 pages; there's no author, cover image, or specific title. Taylor Swift fans have jumped on the page count for the book; add the numbers together and you get 13, which is famously the singer's favorite number. 13 comes up again as significant to the book since June 13 is the day that the publisher will reveal the book's author, per Publishers Lunch.

The publication date also has Swift connections. July 9 is specifically referenced in the song "Last Kiss" from the "Speak Now" album. Swift announced on Twitter she's releasing "Speak Now (Taylor's Version)" on July 7, "just in time for July 9th, iykyk." So is she releasing the album for fans to listen to while they read her book? Maybe!

However compelling the potential clues are, Page Six has reportedly confirmed the book is not by Swift. Whoever wrote it, clearly the publishers expect to have a hit on their hands since the first run of the book will be 1 million copies. We'll find out if Swifties who pre-ordered the unknown book cancel if it really does turn out to not be her.