Charlotte Yes, supposedly, I know this question was asked six months ago, and I hope you see this answer. In the inside back cover of my copy, it tells me that the film rights have been sold to the director who directed the film, Mama. So, I'm not sure if it's actually being made into a film, but supposedly the script is in place at the studios. As somebody else said, I'm not sure how they'll cover the creatures, because in the book it's easily left to the imagination as they are never explained or even seen by the reader--so the movie could easily ruin the premise if they screwed up on that big detail.
Richard Watt Heard Josh Malerman speak in LA a few weeks ago. That Monday, he was going to a studio for talks. Don't know if anything will come of them of course, but it's an intriguing possibility.
Donna In the author's acknowledgments: Speaking of Ryan Lewis one of his managers, (Ryan's phone in particular has become something of a notebook for me, flooded with ideas as small as "Hey! Janitor closets are kind of scary!" and as lofty as "What do you think of a thousand-page movie script?") So maybe we can expect to see this one on the big screen. I don't know how they would do the creature though.
Donna It is going to be a movie (Netflix, I think?) coming out this November/December 2018 Sandra Bullock and Sarah Paulson!
Ashley Dufault Yes, it's going to be made into a movie. Interesting that the movie rights were secured so long ago.