No surprise here, the man is a machine, god bless him, hopefully he'll keep to the two books a year schedule for years to come.
https://www.liljas-library.com/article.php?id=6030
King has finished yet another book after The Outsider (and I don't mean Elevation). Here is what the moderator of King's official message board said:
Since he finished THE OUTSIDER (which was already in production behind the scenes when SLEEPING BEAUTIES came out), Stephen has written another book and a few short stories/novellas, one of which (ELEVATION) will be released in November.