Didn't see a topic for this. Was announced with the iPad 3 (or whatever they're calling it). Also I'm fairly sure that this will not be iPad exclusive, but if any mods disagree then they can move it to the appropriate iPad forum. Warning: My internet is terrible, so the quality of the pictures will be pretty terrible too because I took them from Apple's Keynote streaming on their website. According to the presenter, there's single + multiplayer. Will be launched "exclusively on iOS later this month"
