Blizzard has released an official overview of the Tempest Unleashed event coming in the Phase 2 Dragonflight prepatch, including Primal Storm invasions and Uldaman. You can get ilvl 252 gear from this event, the Bag of Furious Winds toy, and the Primal Stormling battle pet.
Primal Storms Event Guide
With the second phase of the Dragonflight pre-expansion patch, you will be right in the eye of the (primal) storm.