It's also the first major success for an alien franchise game, since the AVP series of games.
I think they're probably in discussion at the very least for renewal.
You also have to remember they're continueing Prometheus. Dunno when, but that was the intention. Whither or not he can get it greenlit is another thing. They killed off some really likeable actors in Prometheus.
I don't recall the last time they killed off a character, and then told the actor to come back and play someone else in a franchise.