n-Space releases massive list of Black Ops DS features
These come straight from their Facebook page…
-VOIP in MP Lobby
 -Unlockable MP Perks
 -Unlockable MP Weapon upgrades
 -Weapons are saved within a level
 -AI react to sound
 -Knife – secondary weapon
 -Throwing Knife Mechanic
 -Penetratable Material (thin wood, metal, etc) – Does partial damage
 -Commander (Battle Action Event)
 -Instant Lobby for Quick Match MP
 -Join in progress for Quick Match MP
 -SP Zombie Mode
 -Co-Op Zombie Mode
 -Selection of Spawn Location in MP
 -Manipulation of Camera during Spawn Location Selection in MP
 -Button Controls
 -MP Player Titles
 -Player Online Status
 -Join Friend Server from Online Status Info
 -Nintendo Leaderboards for online stats
 -Player controlled aircraft
 -Updated Menu System
 -Updated UI
 -Updated Radar Display (Agents only appear when moving or firing)
 -Revision of the Crouch/Run mechanic
 -Collectibles can be touched/shot
 -Max Friend list (64 Friends)
 -33 Player weapons
 -Removal of Latency check in MP
 -Return of Snipers in MP
 -12 MP Maps
 -4 Zombie Maps
 -24 SP Challenges
 -101 Awards
 -Switching weapons during a match
 -Switching perks during a match
 -Can select weapons for both weapons slots in MP
Holy crap, I am left incredibly impressed. I may actually have to pick up the DS version of Black Ops! AND it includes zombies? That’s just plain awesome.