Blizzard has shared a Blue Post explaining how players can create Death Knights in Wrath of the Lich King Classic. Death Knights are the tenth class added in World of Warcraft and one of the main features of the upcoming expansion for Classic WoW.
A hero, that’s what you once were. You stood boldly against the shadow and purchased another dawn for the world… with your life. But the evil you fought is not so easily banished; the victory you claimed, not so easily held.