May 30 will see the release of A Cage Went in Search of a Bird: Ten Kafkaesque Stories, and the last story in there was written by Charlie. Thanks to a bit of digging by regular tipster u/pavingmomentum, we can let you in on the title of CK's story.
Don't go further if you don't want to be slightly spoiled.
... "This Fact Can Even Be Proved by Means of the Sense of Hearing."
... which comes from this Kafka quote:
“Everyone carries a room about inside him. This fact can even be proved by means of the sense of hearing. If someone walks fast and one pricks up one’s ears and listens, say in the night, when everything round about is quiet, one hears, for instance, the rattling of a mirror not quite firmly fastened to the wall.”
What else do we know about the story? Not much. A Good Reads reviewer says:
"Both Charlie Kaufman and Keith Ridgway write from the perspective of men who are unstable in their identities [...] and they felt knowingly Kafkaesque". (Source)
Looking forward to it, aw yeah!