Google's DeepMind division will attempt to make an AI that can play Starcraft II [wikipedia.org] in real time without using the same unfair knowledge and capabilities (such as controlling units that are "off-screen") that Blizzard's own AI use. Blizzard and DeepMind are working on a build of the game [deepmind.com] that will be "open and available to all researchers next year".
Reported at The Washington Post [washingtonpost.com] and The Verge [theverge.com].