A "GCD Easter Egg." Like an extra session, or surprise announcement, or something. Not an Easter Egg in the game. That's how I read it anyways.
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.