Prophecy: The fortelling or prediction of what is to come.

Looking at the dungeon, I believe the Kell Echo that's the boss is fortelling Eremis and her role in Beyond Light, and the visual storytelling in the Wasteland area of it shows what'll happen to the planets that the Pyramids will be making contact with and apear to possibly be terraforming to not suit human/awoken life(Exos can probably live anywhere with their inorganic bodies), like finding Clovis Bray from Mars, the Lighthouse from Mercury, and bones from Io in a dark sea of sand, which slightly reminds me of Journey.

Just my interpretation of the new dungeon though, and if we didn't get the info for the fall expantion.