UPDATE: Here's an official response from Random House, Martin's U.S. publisher:
“As his publisher, we support George RR Martin as he works hard to finish The Winds of Winter. Any on-sale dates currently listed online for the novel are incorrect. Once we have a publication date for The Winds of Winter, the world will know.”
ORIGINAL STORY: George R.R. Martin's meticulousness has given way to a legendarily glacial pace in the realm of A Song of Ice and Fire. But the sixth book of the series that gave birth to HBO's Game of Thrones may publish in March 2017.
The info comes from an Amazon France listing, one that's still live as of this publication. Things that make us skeptical: no cover art, a highly improbably brief listing of 704 pages. If that length's true, we'd have to guess that Book 7, the finale A Dream of Spring, may be underway as well. Could we even dare for a fast back-to-back publish?
Entertainment Weekly reports that HarperCollins, Martin's U.K. publisher, said “nothing has been finalized regarding the publication or the date.” The magazine notes that Amazon Spain juked everyone with an incorrect release date a year ago, and that Martin has told fans time and time again that the official publication date would first appear on his blog when it materializes.
The aptly named fan site Winter Is Coming cautions that...
"...Amazon regularly makes pages for upcoming expected releases, even when there has not been an announcement. And they regularly use placeholder dates on those pages, which have little to no basis in reality."
In January, Martin shared a long, revealing blog post apologizing for the Winds of Winter's continuing stay in purgatory, writing:
"THE WINDS OF WINTER is not finished.
Believe me, it gave me no pleasure to type those words. You're disappointed, and you're not alone. My editors and publishers are disappointed, HBO is disappointed, my agents and foreign publishers and translators are disappointed... but no one could possibly be more disappointed than me. For months now I have wanted nothing so much as to be able to say, 'I have completed and delivered THE WINDS OF WINTER' on or before the last day of 2015.
But the book's not done."
He wrote that hundreds of pages remained to be written. A new excerpt focusing on Arianne Martell was released in May.
Hear Fuse's Back of the Class podcast break down the Game of Thrones Season 6 finale in the episode below: