Game Freak's official website has posted this strange image, accompanied by the text "This classic game played all over the world will be reborn from a surprise collaboration." While the horse-like image could be from Rare's Viva Piñata (To which Nintendo recently acquired the rights), the "collaboration" could possibly be with Pokémon, seeing as how it has played an important role in Game Freak's history, not to mention it's also "classic." All this is just speculation and the image may not have anything to do with Pokémon at all.