Following a little tease, Blizzard today announced an expansion pack for Diablo III, named Reaper of Souls. It'll add a new act with new enemies and locations and all that, as well as the Paladin-y-sounding Crusader class and a level cap boost to 70.

The expansion sees Malthael, once the Archangel of Wisdom, returning as the Angel of Death to snatch Diablo's black soulstone. "None can stop death," he hisses, but I imagine we'll hunt him then beat him until shiny swords and gems and hats fall out.

The adventure will visit the new city of Westmarch and the Pandemonium Fortress, with new quests and monsters. The level cap boost brings news spells and abilities to all classes too. In the end-game, new Loot Runs and Nephalem Trials should jazz things up.

Of the new Crusader, Blizzard says the plate-wearing class "uses battle magic to strengthen allies and weaken foes" which, yes, does sound a lot like Diabo II's Paladin. One imagines it's heavily reimagined like D3 does to other classes, though.

It seems Reaper of Souls will also bring the long-awaited 'Loot 2.0' drop system revamp, which will stop throwing so many garbage items at you. New, better Legendaries are promised too.

One imagines the official site will have more details on all this whenever Blizzard updates it. As for when or how this will be released, Blizzard's saying nothing. Look, a cinematic trailer:

And see the Crusader in action in this first gameplay trailer: