https://wccftech.com/new-content-battle-for-azeroth-patch-8-1-5/

Blizzard has added new content to World of Warcraft: Battle for Azeroth patch 8.1.5 on the PTR, including six memorable dungeons, new profession questlines and a new micro holiday.

Patch 8.1.5 ‘Crucible of Storms’ is currently live on Blizzard’s public team realm and the new content mentioned above hasn’t been tested before.