Player vs. Player

Players now deal 20% less damage to Death Knight, Hunter, and Warlock pets.
In 2v2 Arenas, Dampening will begin at 20% when both teams have either a tank or healer.

Druid
Convoke the Spirits no longer casts Full Moon and Feral Frenzy when engaged in combat with enemy players.

Mage
Triune Ward (legendary) now provides 50% effective barriers (was 65%) in PvP situations.

Fire
Infernal Cascade (conduit) effectiveness reduced by 33% in PvP situations.

Paladin

Holy
Divine Favor (Honor Talent) cooldown increased to 30 seconds (was 25 seconds), and now increases cast speed by 30% (was 60%).

Protection, Retribution
Word of Glory’s healing has been reduced by 20% in PVP situations.

최종버전이 아니라 변경, 추가될 소지가 있음

출처: https://us.forums.blizzard.com/en/wow/t/pvp-tuning-changes-for-january-26/841816