As I've said elsewhere, if this is a joke, it's tasteless.
For what it's worth, they sent out an e-mail today at about 4:00-ish p.m. EST:
"We here at Starship Exeter
are excited to make a huge announcement regarding the release of Act Four, the final piece to our episode, "The Tressaurian Intersection." We're writing to you because you contacted us over the last year or so, and we wanted you to be the first to know.
"Here's the hint: