Apokx

Some new Death Knight abilities:

* Death Coil -- Depletes all Runic Power, dealing 600 damage to a non-Undead target, or healing 900 damage on a friendly target.
* Death Grip -- This is the Death Knight's "taunt" ability. It also pulls the target to the Death Knight, forcing them to attack the Death Knight for a short amount of time. Yes, I said pulls the target; Blizzard is going to allow players to move mobs in the expansion both with Death Grip, and other knockback/pull abilities. This works on players too, so PvP balance ahoy!
* Chains of Ice -- Roots the target in place. When the spell fades, it places a snare on the target that reduces in potency as the duration runs out.
* Raise Dead -- Raises a nearby corpse to fight for the Death Knight for 2 minutes. If used on a player corpse, the player has the option to play as the ghoul for the duration -- gaining access to the ghoul's abilities.
o The ghoul has the ability to do the following:
+ Leap to the target
+ Rend for decent damage-over-time
+ Stun target, and of course more
* Death Pact -- Sacrifices the raised ghouls to heal the Death Knight.
* Death and Decay -- Targeted, AoE Damage-over-time which pulses similar to the Paladin spell Consecration. Anyone affected by Death and Decay has a chance to be feared.
* Frost Presence -- Increases Armor by 45% and allows the Death Knight to generate 25% more threat. Only one presence can be active at any time.
* Unholy Presence -- Increases Attack Speed and Movement speed by 15%. Only one presence can be active at any time. This was described by Tom Chilton as the "PvP" presence.
* Anti-magic Shield -- Reduces the damage of the next magical spell cast on the Death Knight by 75%. It also converts the damage reduced into Runic Power.
* Strangulate -- Depletes all Runic Power, dealing minor damage and silencing the target for up to 5 seconds.
* Summon Deathcharger -- Allows the Death Knight to summon a Deathcharger mount. This mount is acquired through quests, similar to the Paladin and Warlock land mounts.

There are some differences in the abilities between different interviews, but some other abilities are being discussed, like the Blood presence, that increases DPS and heals the DK when hit.