What is this mysterious 'Stranger' trailer from J.J. Abrams?

What is this mysterious 'Stranger' trailer from J.J. Abrams?
stranger j.j. abrams

J.J. Abrams' Bad Robot Productions has posted this interesting trailer to YouTube today titled 'Stranger' which is a bit of a mystery. The trailer is pretty creepy and features a guy with a stitched up mouth, but we have no idea if this is a TV series, a movie, or something else entirely. What do you think it could be? Let us know in the comments.