One thing that I notice from the trailer is ...

It's not LV426 ... At least not the version from the Alien film.

- The air appears breathable ... They are not wearing helmets in some shots.
- The sky is blue ... It was permanent night basically on LV246
- The ground is clear and unobstructed ... In Alien it's rocky and dangerous

I kind of think that this is not the exact prequal to Alien ... It's in the same universe and we will get an origins story. But this isn't LV426, and that may not come into it at all ...