Something that's been bugging me about SOMA lately is that it's not exactly clear what happened to the survivors of the Curie that are mentioned in one of the last Captain's logs in the ships ruins.

Have I missed something? Where did they go? Obviously some of them left in one of the escape pods outside Lambda, yet they're never mentioned as having integrated with the survivors of PATHOS-II. Or are they part of another cut element from the games story?

I think it was mentioned on Frictional's website that the Curie was between Carthage and PATHOS II when the asteroid struck. After the Impact Event, the Curie went exploring the coastline to report how bad the damage was. On its way back to PATHOS II, something happened which caused a breach, and imminent flooding of the vessel.

In Transmissions, I think someone mentioned that some PATHOS workers were able to pull the vessel close to one of the facilities when they noticed it floating nearby. Salvage missions were then conducted to take supplies from the ship. This might be where the Vivarium came from, since the Curie shipped supplies and tech from Carthage.

In-game, you can find one open escape pod. No one knows exactly what happened to the person that was in it, but the lack of logs about them suggest they never made it to PATHOS II. They probably either died or became a WAU mutant, possibly the Stalker from the Curie level.