Heroic Dungeon rewards will get a slight increase to their item levels with the launch of Season 1!
The War Within Season 1 Overview
In Pre-Season, Heroic Dungeons rewards are dropping at a 571 item level on the Adventurer Track. With the launch of Season 1, Heroic Dungeon rewards will begin to drop at 580 item level on the Adventurer track.
Furthermore, Heroic Dungeons will reward slots in the Great Vault with each weekly reset. Players will need to complete 1, 4, and 8 Dungeons respectively to unlock all Dungeon Slots in their Great Vault.
Heroic Dungeon Great Vault slots drop at 593 item level on the Veteran track. This Veteran gear can be converted into Tier Set pieces with the Catalyst throughout Season 1.
Season 1 launches on September 10th. On Season 1 Launch, Mythic Dungeons open with Mythic+ and the Raid opening the next week on September 17th. While players are waiting for stronger gearing sources, Heroics could still be of use for gearing purposes because they can be repeated unlike Mythics that are on a daily lockout.