In the Patch 10.0.7 PTR, another alt catch-up has been added. Together with the Primalist Gear Tokens that allow alts to obtain fresh ilvl385 gear, you can now further upgrade that Primalist gear to ilvl395! You can use Untapped Forbidden Knowledge to upgrade any ilvl385 Primalist pieces to ilvl395.
As of the most recent Patch 10.0.7 PTR build, these can drop from rares, chests and events within the Forbidden Reach. One Untapped Forbidden Knowledge is used per upgrade, which will increase the pieces' ilvl to 395 and give it the tag Primal Empowered.
This is not just news for people looking for alt catch-ups, though. The ilvl359 and ilvl385 Primalist gear sets use the Blue Primalist tint, but the newly upgraded ilvl395 pieces use the Green Primalist tint! This tint was originally datamined during the Dragonflight Alpha and did not make it into the game until now.
Cloth Set Leather Set Mail Set Plate Set . Read more on wowhead.com