Thought this would be a fall release for the 3DS, but the latest investor briefing shows that the game has apparently been pushed to 2014. Was looking forward to it, but I guess there's still plenty of other great 3DS-games this year.
http://www.nintendo.co.jp/ir/en/library/events/130612/02.html
http://www.nintendo.co.jp/ir/en/library/events/130612/02.html