Chris Willman Senior Music Writer and Chief Music Critic Hi, it’s not her — that’s the problem, it’s not her. Some yet-to-be-revealed celebrity is releasing a book in July that the publisher is promising will be a blockbuster. But Variety can report for certain that this mystery author is not, as rumored, Taylor Swift. Whoever the famous person or people are that are behind the book, they have a momentary bestseller on multiple book sales sites, based on the rampant speculation. The mystery book from the Flatiron imprint is available for pre-order at $45, despite not having a known title or author. And, as a result of the Swift rumors, what is officially known only as “4C Untitled Flatiron Nonfiction Summer 2023” has been hovering in the top 10 of the Amazon book sales chart, rising as high as No. 2 and sitting as of this writing at No. 8. On the Barnes & Noble website, the anonymous book currently ranks No. 1 on that retailer’s pre-orders chart.