Think about it. Invitations went out just yesterday. They included a few clues. This one is a big deal with a live demo. It's the last episode of his 5 part trilogy that he has been talking up and dropping hints about for months. The best was saved for last.
Looks like it opens green, as far as what is happening, sympathy trade with SCTY. SCTY is gapping up 8-9% this AM on a monster upgrade from Credit Suisse (p/t of $52). Today is the Elon trade back in business.