Isle of Conquest

A new large-scale siege Battleground where Horde and Alliance have to battle head-to-head for control of strategic resources to lay siege to the keeps of their opponents.

It's too soon to speculate on the mechanics of the Battleground, but it leans towards being of bigger scale than the fifteen-man Eye of the Storm or Arathi Basin.

What Blizzard wants to say with "large-scale" ? I mean, you wouldn't call either Battleground "large-scale", would you? At any rate, with all the data Blizzard has gathered from the success and popularity of Wintergrasp, expect Isle of Conquest to be several steps in the right direction.