Official Blue Post: https://worldofwarcraft.com/en-us/news/23685044/updated-june-28-chains-of-domination-content-update-notes
Wowhead: https://www.wowhead.com/news/official-patch-9-1-chains-of-domination-patch-notes-323035
Official Survival Guide: https://www.youtube.com/watch?v=WuPF51g1A5A
For eons the Jailer was bound within The Maw. Now, his endless armies gather as he expands its boundaries to consume Oribos. In the face of annihilation, Bolvar marshals his last remaining allies to charge into the heart of Torghast and confront the Jailer where he is most powerful.