SEGA announces the preorder bonus for Alien Isolation will be a free upgrade to the Nostromo Edition, which includes bonus content called Crew Expendable, which features the voices of the cast of Alien (except for Ian Holm). This trailer shows off what this is about, and here's word on what this all adds to Creative Assembly's survival/horror game:

Anyone who pre-orders the game will get a free upgrade to the Nostromo Edition, which includes the bonus content “Crew Expendable”. Players can choose to play as one of three surviving crewmembers, only moments after Brett’s death at the jaws of the creature. As Ellen Ripley, Dallas or Parker, players can explore the Nostromo from habitation deck down through engineering, coordinating their efforts with Lambert and Ash to lure the Alien into the ship’s airlock.

In addition, consumers who pre-order at GameStop will exclusively also receive “Last Survivor” in which players pick up the story as Ripley tries to escape on the Narcissus. On hearing the screams of Lambert and Parker, players must navigate their way back down through the Nostromo in order to activate the self-destruct sequence, before retracing their steps back to the Narcissus shuttle and their escape.