Nintendo just commented on this:
"Nintendo is aware that a hacking group claims to have compromised Wii U security. However, we have no reports of illegal Wii U games nor unauthorized applications playable on the system while in Wii U mode. Nintendo continuously monitors all threats to its products' security and will use technology and will take the necessary legal steps to prevent the facilitation of piracy."
In addition to what Foxi4 said no piracy attributable to a device that has yet to be released.... that is a shocking turn of events there.