Nothing official, but at the end of this indieWIRE article ("The Unexpected Story Behind Philip Seymour Hoffman’s Improvised ‘The Master’ Line"), the writer tips a fall release for Charlie's I'm Thinking of Ending Things.

Next up for the actor [Jesse Plemons] is the lead role in Charlie Kaufman’s “I’m Thinking of Ending Things,” which Netflix is expected to release in the fall. (Source)

There's still no sign of a trailer.

And that's American Fall, obviously, which here in Oz we call autumn--but it'll be spring here instead of fall... which we call autumn.

Anyway. Yes.