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

Blizzards has announced that it has begun rolling out the first Battle for Azeroth patch 8.1.5 build on the PTR and has shared some developers’ notes.

Upcoming patch 8.1.5 will unlock the Kul Tiran and Zandalari allied races, but will also introduce new Naga invasion World Quests alongside WSG and AB visual improvements. In addition, the upcoming content update will add Wintergrasp to the Epic Battleground list, although this feature might be locked on the PTR at first.