All of this is tied to the lair of the eponymous Osiris, of course; the Vex are trying to use the Infinite Forest to find something, and Osiris is hoping that the PCs will help him stop that effort. There’s also more of Mercury to explore, which winds up being a desert wasteland in sharp contrast to the aforementioned infinite forest.
The DLC is also adding in a new raid lair, which is a different way of extending raids than the original game; rather than a whole new raid, this adds new parts on to the existing raid. You can check some of it out in the video clip down below, if you’re not content to simply dream of a forest that’s just… forever.
Source: Twitch via Kotaku
