"At the hour of her third death, she will usher in our coming."
First thing, when Il'gynoth says "She will usher our coming" could it be like a pre-expansion event? We fight her and then she tells us that the Old Gods are coming.
Second, I've found that Sintharia or Sinestria, a female Black Dragon, is still more or less active in the world thanks to a quest, The Twilight Master, added in Legion. She was the mate of Deathwing and was corrupted by him thus making her a slave to the Old Gods. Also she has died two times, once in the Night of the Dragon novel and last in the Bastion of Twilight in Cataclysm. Maybe she could be resurrected again and we could fight her. In her last moments before her third death, Sintharia could tell us about the arrival of the Old Gods thus the next expansion.
Thoughts?
PD: Please do not turn this into a Sylvanas-Jaina Forum Thread, there are other threads for it. Thank you.