Looks like maybe somekind of auxiliary controller used along with Playstation Move & Eye...
More info...
http://www.engadget.com/2012/06/04/s...rbook-ps-move/
http://www.joystiq.com/2012/06/04/so...ystiq+(Joystiq)
Video of entire 2012 E3 press conference...
http://www.youtube.com/watch?v=SUMoX-pl8AA
Start around 1 hour 21 min. for the Wonderbook stuff.