Blizzard have unleashed the Wizard on the Diablo III: Darkness Falls, Heroes Rise page. As before we get a short story, a spotlight video showcasing the Wizard, a chance to win some cool prizes and the exclusive Class Sigil.
Brilliant practitioners of the arcane arts who deftly wield the energies of fire, ice, lightning, and even time itself in the pursuit of their enigmatic goals. Bedecked in archaic charms, clad in runes, and wrapped in free-flowing robes to allow for the somatic components of their spells, wizards are a veritable thunderstorm of lethal powers who can strike from close or long range. There is no safe way to approach an angry wizard.
The Wizard got a background-building short story as well, which you can read here.