This game was just announced.It's a 3DS title and we don't have any information on it yet but it seems to be another mystery dungeon game.It's coming to Japan this year.
From Serebii:
"In this game, you start off as a character who turns into a Pokémon as you fall into a dream. Possible Pokémon are Pikachu, Oshawott, Axew, Snivy & Tepig. This game is in full 3D. Unlike past games, this game appears to be standalone, rather than having two versions
It features a variety of Pokémon including Pokémon from Unova such as Gurdurr, Hydreigon and Virizion. You receive Quest Requests from Dunsparce, Cofagrigus runs a store, to which we don't know the details. Rampardos runs the Treasure Store. Kecleon returns, having the usual Goods store, with many items around it.
Finally, it has an Augmented Reality feature. If you scan things, they become Magnagates, which open up paths to new dungeons for you "
TRAILER:
EDIT:The game will be released in Japan on the 23 of November.