[Evolution]

Summary...

- Players look more realistic than 2k7
- Passing has improved, more crisp pases as opposed to lazy ones.
- Announcing crew has new lines.
- Rebounding is more aggressive
- Dual player control got an upgrade
- Defense is a focus in 2k8...they made a feature where you can lock onto the ball handler (based on defensive ratings, so crappy players defensively will have a tougher time locking in)
- There is a tendency icon under the player, the fuller it is the more likely you will hit a shot from there.
- Halftime show is cut down, focus is on post game.
- In Association, lineup changes can effect team chemistry. Like if you take out a vet for a rookie, it will effect team chemistry.


That's all the important parts, but if you want to know more (details) read it.