E3 would be a great place to confirm it's exsistance, as it hasn't even been officially announced yet. I'm not very sure if they'll confirm which system it will be on though, but the wii seems to be the Most likely candidate.
And as for the hidden message, I' not sure if they're actually kidding or not. It is, after all, Nintendo power.
PSN- williwod
Remember, there are no stupid questions. Just stupid people- Mr Garrison