A) There's still a lot of opportunity to disclose more surprises starting at the presentation in January
B) It might be that Miyamoto just said that because they weren't ready to reveal, and they simply needed more time, so it's always best to say what he said, instead of "look, we need six more months to finalize this thing".
Nintendo DOES get imitated quite often.

The Screamapillar is easily identified by its constant screaming—it even screams in its sleep. The Screamapillar is the favorite food of everything, is sexually attracted to fire, and needs constant reassurance or it will die.








