ANN has the list of the announced staff: Animation Production: A-1 Pictures Director: Tomohiko Ito Script: Taku Kishimoto Music: Shusei Murai Character Design: Jun Nakai Chief Animation Director: Jun Nakai Assistant Director: Kotomi Deai
I hope we’ll get info on the voice actors soon. I’m looking forward to watching the anime in July.
ETA: Apr. 17:
The anime website has been updated, you can find a wallpaper for download and images of the characters: