It got confirmed in the latest issue of Nintendo Power! I can't wait to see how will this turn out to be! It is very interesting idea, I mean there is a lot of possibilities for it on the 3DS that can make it EPIC! XD
EDIT: Oh and there is an 8 mins gameplay footage too but it's for the console one (The power of two)
FYI,the game is being made by DreamRift,the company behind Henry Hatsworth and Monster Tale,and it's their first 3DS project.
Source:http://nintendoevery...vealed-for-3ds/