Patch 9.1.0: Chains of Domination is the first content patch of Shadowlands, announced at BlizzConline on February 19, 2021. It was pushed to the Public Test Realm on April 13, 2021 and went live in the Americas region on June 29, 2021.
The traitorous Sire Denathrius has been defeated, but the power of the Maw still grows. In Chains of Domination, the upcoming major content update for World of Warcraft: Shadowlands, players will delve into new depths of the Jailer's hopeless domain, seeking to understand the true nature of his malignant plans. Backed by the renewed might of the four Covenants, the champions of the Horde and the Alliance will take the fight for the Shadowlands to the seat of the Jailer's power. But the Banished One has a terrible new champion in his service—a cruel instrument of despair conscripted by Sylvanas Windrunner, capable of instilling dread into the hearts of Azeroth's heroes like no creature of the Shadowlands.
