Do anybody know, how open the toddler humanoid robot iCub is?

On their homepage stands: "an open source cognitive humanoid robotic platform".
But I can't find neither the sourcecode of the software nor the plans for the hardware.
If it is realy opensource, then possibly some ideas of it could be integrated in InMoov and/or MyRobotLab.
For example, if InMoov becomes legs, parts of the iCub software and/or hardware could help to keep its balance:

https://www.youtube.com/watch?v=MQLwzmi3noc

Btw: The name iCub everytime reminds me to Apple.

Greatings

theuserbl