There's also the question about amiibo surly the DlC amiibo like Ryu and Roy will launch next year therefore they would have to keep updating the game anyway to be able to include the compatibility.
In a recent interview with USGamer, Animal Crossing: New Leaf director Aya Kyogoku fielded several questionsabout the upcoming release of Animal Crossing: Amiibo Festival for Wii U and Animal Crossing: Happy Home Designer for Nintendo 3DS.