Patch 7.1: Return To Karazhan will go Live On 26 October 2016 AEDT. Patch 7.1 takes players deeper into the continuing storyline of World of Warcraft: Legion. This free update brings with it additional content, such as fan-favourite raid, Karazhan, which has been completely revamped as a new five-player dungeon. It will include 9 bosses, updated items, fresh encounters, and much more.
Patch 7.1: Return To Karazhan Preview
There is also adeveloper Q&A with World of Warcraft Game Director, Ion Hazzikostas which details the patch in more detail.