The Wii U Ancast Keys were leaked today and uploaded to Wii Brew. The remaining keys needed now are the common keys etc. We're almost there.
Espresso vWii ancast key
*Censored*
Espresso Wii U ancast key
*Censored*
Source (It's not like you don't know where to look)
Espresso vWii ancast key
*Censored*
Espresso Wii U ancast key
*Censored*