Bandai Visual has launched an official website of an original TV anime "Rinne no Lagrange". It will be aired in 2012. Details of the anime will be revealed later. The key phrase is "That's the spirit of Jersey club, isn't it?"
Rinne no Lagrange official website
Concept Illustration: Morisawa Haruyuki
Update on Aug 17th
General Director: Sato Tatsuo
Director: Suzuki Toshimasa
Series Composition: Suga Shotaro ("Darker than Black: Kuro no Keiyakusha
Original Story: Production I.G
Production Studio: Xebec
Source: Scan of Young GanGan
Rinne no Lagrange
Update Dec 6th
According to Bonichi Newspaper, Rinne no Lagrange is 24 episodes long and the first 12 episodes will be aired from January to March and the latter half will be aired from July to September 2012.
Source: Bonichi News