As mentioned, survival mode will basically be combat training, but with some cool new features. Players will have the opportunity to buddy up with another player (or run it solo, if so desired) and play against A.I. on the different multiplayer maps. As the levels progress, the competition get's harder and harder.
It's a zombie/horde mode type of thing, but on the MP maps. It should be fun and is a decent replacement for combat training.
