New Post has been published on Ragzon

http://ragzon.com/besides-the-release-date-is-announced-of-shingeki-kyojin-chuugakkou/
http://ragzon.com/besides-the-release-date-is-announced-of-shingeki-kyojin-chuugakkou/

A few months ago it was announced that the manga spin-off “shingeki! Kyojin Chugakko ” would be taken to Anime, and now the project website Linked Horizon announced that the group would be responsible for interpreting the Opening.
The new song will be called “Seishun wa I did not Hanabi” and can be heard via the 
Shingeki No Kyojin: JUNIOR HIGH, Shingeki! Kyojin Chuugakkou #ShingekiNoKyojinJUNIORHIGH, #ShingekiKyojinChuugakkou