Recently, Owlcat Games once again reminded about The Expanse: Osiris Reborn. The developers published a concept of one of the locations, and also shared information about the game's lore.
The focus was on the red planet:
Terraforming Mars is a long and difficult process. The climate on the planet is too harsh for everyday life on the surface. Therefore, Martian cities lie underground, dreaming of one day taking possession of the surface. In The Expanse: Osiris Reborn, you can visit and explore one of the cities on Mars.
Add The Expanse: Osiris Reborn to your wishlist Steam can be found at the following link. The release date has not yet been revealed.