流浪の民 (Rurou no Tami) will be releasing a new album called 夢幻放浪記. 16 tracks in total, 4 of which will be new songs.
Shikata Akiko, under the circle name Vagrancy, will be releasing fluff ~Orgel Arrange Mini Album. It will contain the orgel version of Umineko no Naku Koro ni and Katakoi, along with four other songs.
WAVE will round out its four-part TYPE-MOON tribute with ELEM. FABLE, a Tsukihime arranged and imaged sound album based on WAVE's earlier Tsukihime arranged albums. Not only have they brought back Katakiri Rekka and Rem, who were responsible for vocal in Tsukigatari, they have also invited Chata, Misawa Aki, Sakurai Anna, and K.Juno.
Katakiri Rekka will be releasing a new CD called 月夜の道化師よ、狂乱に嗤え。 Unfortunately, there is very little information at the moment.
In addition to that, Rekka has announced on her blog that the M3-24 CD Katakiri Shiki * Mousou Rumba will no longer be on sale. Kodansha, the publishing company who owns the right to Sayonara Zetsubou Sensei, has issued a warning that the CD is in violation of its copyright. So for now, the CD will be discontinued until further notice.