Blizzard posted yet another update for the Patch 10.0.5 PTR notes, noting a new event will be added to the Primalist Tomorrow.
Added to this week’s PTR update:
NEW EVENT: THE STORM’S FURY
A new event has begun taking place in The Primalist Future! Head to the portal that can be found at the Temporal Conflux in Thaldraszuz, and The Storm’s Fury event will spin up every 5 hours.
The Primalists are bringing some of their strongest forces to bear to preserve their future plans and dominate Azeroth. You will want to head out with a group of mighty adventurers to seal their portals and defeat their mighty monstrosities.
For participating, you will receive Essence of the Storm, which can be exchanged for rewards. Look out for other vendors who can sell you items to help weather the storm, as the Primalists try to Freeze all of their enemies to the bone.
This will be testable in a later PTR update. We’ll provide an update once it’s available to test.