According to Morning magazine, Tsunamoto Masaya’s manga Giant Killing was announced to get a TV anime adaptation. It will be aired from April 2010.
26 episodes
Director: Ko Yu (“Zero no Tsukaima ~Princesses no Rondo~”).
Series Organizer: Kawase Toshifumi (“Higurashi no Naku Koro ni”)
Production Studio: Studio DEEN
Sources:
Scan of Morning
Morning magazine official website