Path of Exile’s 3.13 update is coming out in just over a week, and developer Grinding Gear Games has now revealed the major expansion. It’s called Echoes of the Atlas, and it introduces a host of new content heavily tilted toward Path of Exile’s endgame.

Echoes of the Atlas adds 11 new map types to the RPG game, as well as important new characters who have new challenges to take on. You’ll encounter a new NPC known as the Envoy, who has news of visitors arriving in the Atlas. Once you’ve traveled to the new area, you’ll meet The Maven, who will ask to observe while you fight a boss. When the Maven observes a fight, she’ll make it more difficult, and after the first time she watches, you’ll be able to call her to observe subsequent boss encounters.

Eventually, you’ll receive an invitation to the Maven’s astral realm, where you’ll be up against an increasingly difficult boss rush. The Maven will pit you against multiple bosses simultaneously – first three, but increasing each time to a maximum of 10.