A rather interesting new add on, though its not clear yet if its a gimmick or a full feature.
If you havent heard there have been pics of the 3ds menu showing coins in the top middle. It appears that they have something to do with the built in Game Coins pedometer and you gain them as you walk for in game items on games that choose to use this system. While all the details are not around… they will become known on the 19th, I’ll try to keep you posted as time advances.