HBO is currently running a Facebook live video promotion to lead up to the Game of Thrones season 7 premiere date reveal. It entails watching fire very slowly melt a thick block of ice while people scream keywords (which I’m dubious actually do anything) in the comments section.
So far the feed has either been stopped (a FB live time limit, perhaps?) or has crashed twice since its 2pm ET kickoff. Fan reactions to the entire thing have been a mixture of humor, excitement, and exasperation. At this time, the premiere date is still unknown (if I had to guess, it’ll be mid-June), but the feed is back up again… for now.
UPDATE: It was revealed shortly after 3pm ET to be July 16, 2017. There’s a short promo at the end of the video (jump to ~15:30).