We've datamined all the Mage Tier Set appearances coming in Patch 10.2. Season 3 Tier Sets will be available from PvP and the Amirdrassil Raid featuring nine bosses, culminating in a showdown with the Primal Incarnate of Fire: Fyrakk the Blazing.
Be sure to checkout the complete list of Season 3 Tier Set Bonuses coming in Patch 10.2.
Season 3 Tier Set Bonuses