'Pokemon Rumble World' has popped up on the ever-reliable Australian Classification Board website.
While offers little to no info (bar a PG rating in Oz), this is obviously the next installment of Pokemon Rumble, a battle royale-style series that tasks players to fight Pokemon in various arenas. The last Rumble game was 2013's Pokemon Rumble U, which utilized the Wii U's NFC support via Pokemon figurines.
Whether or not this could tie into Nintendo's that the company will collaborate with mobile game company DeNA is anyone's guess, although a Rumble game would certainly suit a mobile format.
Nintendo has 'nothing to announce at this time'.