Well, according to The Wall Street Journal, Nintendo is working on a Legend of Zelda title built with mobile in mind. We don't know yet what it will look like or what the gameplay might entail but it's a huge franchise and one that Nintendo might want to release as a paid experience like Mario Run.
Animal Crossing on the other hand will be free-to-play but we still don't know how the renowned city builder will transition over to mobile.
Nintendo is also apparently planning to release a new Pokemon TCG app that could feature real cards but details are still quite unclear.
We should be getting more details on both of them later this year so stay tuned.Source