I've just downloaded it but I don't think anybody knows it's there and I haven't been able to get a game going. So I thought I would let you all know! It's there, it's about 1.5GB and you can be killing Aliens, Predators and Marines in no time!
Also, here is the new video release for the games "Infestation Mode", where a team of marines goes up against, initially, 1 alien. Whenever a marine is killed, they become an alien. I think you can see the potential for awesome here.
Go! Go! Download!
I just got to play a few rounds, and it is fucking awesome. As you would expect with 3 different classes, it has a bit of a learning curve, but I got the hang of the Alien after a few minutes of moving around; it's not as difficult as some would have you believe. Even got an awesome kill coming from underneath a Predator who was standing still for just a little too long, and got the awesome inside-alien-mouth-kill.
Then I played the Predator and got completely fucked on by the other Predator. His jumping is a little iffy in certain positions, like being too close to the ceiling, but overall his shit works great, and using the plasmacaster will never get old.
I still haven't played the Marine yet, going to try that out next.