images have surfaced which leads to speculation this game may have online play. They're apparently from someone who I assume works at GAME (or some other electronics store), and they received display box covers - of course, they could be fake and something someone just whipped up, so take it with a grain of salt, but if this is real, we should get some solid confirmation soon once the display cases start popping up in stores.
http://nintendoeverything.com/animal-crossing-amiibo-festival-appears-to-feature-online-play/
http://nintendoeverything.com/animal-crossing-amiibo-festival-appears-to-feature-online-play/