http://kotaku.com/372179/darwinia-360-is-darwinia%252B
Darwinia on the 360 is a "possible future release" no more. Developers Introversion have, after the ESRB leak the other day, come out and officially announced the project, which is to be called Darwinia+. You'll get two games for the price of one: Darwinia, and the multiplayer Multiwinia: Survival of the Flattest will be bundled together, and while at the moment that's all Introversion are saying, quite frankly at the moment that's all we need to be hearing.