BlizzCon: The Death Knight
Basics: The Death Knight Hero Class will not be a new class to be rolled and leveled from Level One. Instead, players reaching level 80 and finishing a “challenging but doable” quest will be able to unlock the Death Knight class at “a higher level between 55 and 70 or so”.
The Death Knight will be a plate wearing, dual wielding or 2h wielding, class with a new magic/melee system allowing it to tank and DPS effectively. Tom Chilton mentions that “they will not wield no wussy shields”. Unlike other tanks or casters there will be no rage or mana required to perform the DKs abilities or skills, instead a system of three runes (Blood, Frost, Unholy) arranged into any combination onto six rune slots.
The DK will need to etch those runes onto a sword outside of combat, spent runes will slowly regenerate in combat however.