Here are the datamined class changes and tuning for Patch 10.1.5 PTR Build 49824.
Class ToolsBloodTalentsFrostTalentsUnholyTalents
PvP Talents (1)
Reanimates a nearby corpse, summoning a zombie for 20 sec that slowly moves towards your target.
If your zombie reaches its target, it explodes after 3.0 sec. The explosion stuns all enemies within 8 yards for 3 sec and deals 15% of their health in Shadow damage.