I've updated the first post with the v2 overview of spring series:
http://i.minus.com/i70RqqpyS5WHh.jpg
Will definitely watch:
Kore wa Zombie desu ka - Of the dead
Will watch, unless they mess up or troll the viewers:
Medaka Box
Accel World
Sankarea
Haiyore! Nyaruko-san
Will give it a try:
Upotte
Shiawase no Pan
Koiken
(supposedly aired on 1st of March, but no one picked it up yet?)
Might watch:
Hyouka
Natsuiro Kiseki