Sources: http://www.ign.com/articles/2014/01/27/ ... le-devices
http://www.joystiq.com/2014/01/27/repor ... to-promot/
From the article "A report from Japanese news organization Nikkei suggests that Nintendo will soon use smart phones as an interactive promotional tool for its games. The report claims that Nintendo will release game trailers and "free mini-games" to entice players on phones to seek out software on Nintendo hardware. Kotaku notes the specific wording of the Japanese article, clarifying that Nikkei does not use the Japanese word for demo, further suggesting an advergaming tilt to the move."
So it looks like Nintendo is using Smartphones to push their games, not port them. I can deal with that. However, I don't think it's a long term solution.