Black Rock Shooter has finally arrived as an official anime on Jan 28. 2012!
It will span for 8 episodes. The plot revolves around a junior high girl Kuroi Mato dealing with friendship issues. However in an alternate universe, her parallel self Black Rock Shooter struggles to fight her way out of deadly assailants and machines. Highly recommended for those interested in intense action with striking visuals.
(Source: My Anime List)