There are those that are doubting that pictures originality >.<
There's a page from
Kodansha (the publisher of Shounen Magazine) which mentions the anime adaptations of their manga and also future anime adaptations of their manga:
http://shop.kodansha.jp/bc/comics/eizou/
If its really getting animated why isn't
Sayonara Zetsubou Sensei mentioned there yet ?
Until more proof gets out, I'm not going to mention this in the New Announced Anime thread.