Every game seems to incorporate that "Havok" engine or whatever it's called and it's kind of a staple in every game now.
However if you link in this screen shot by the TR on the right how is crouching you can see an NC behind him that's dead in what appears to be your standard death animation/position. Perhaps they haven't implemented the ragdoll physics yet or maybe it was positioned that way for show or maybe they didn't want to take a screencap of a NC flailing around because his arm is going through the floor and spazzing out.
I don't really care about ragdoll, I can take it or leave it. I think it will provide many laughs when I got shot directly in a face by a Vanguard and shoot across the entire continent however.