https://wccftech.com/battle-for-azeroth-patch-nerfs/

Blizzard will be rolling out a new World of Warcraft: Battle for Azeroth patch today that will include various PvP balance changes.

Various specs were already nerfed earlier, but this new hotfix further nerfs Assassination Rogues and Enhancements Shamans in PvP. Mages will also witness nerfs to Comet Storm and Meteor, but the damage of both Frostbolt and Fireball has been buffed.