According to the very well-informed Wall Street Journal, Nintendo would currently work on a Legend of Zelda on smartphone. The game is under development and its release is expected after the launch of the mobile version of Animal Crossing.
After Miitomo, Fire Emblem Heroes and Super Mario Run, Nintendo is about to launch a Zelda game on mobile. According to Takashi Mochizuki, the Wall Street Journal reporter in Japan, whose sources are often excellent, Nintendo plans to release it after the mobile version of Animal Crossing.
A mobile Zelda planned for the end of the year … in the best case
However, it will be necessary to be patient before installing it on its iPhone or Android phone, according to Takashi Mochizuki, Animal Crossing on smartphone is currently scheduled for the second half of 2017. The Legend of Zelda mobile would therefore be Expected at the end of the year (at best) or even early in 2018 (most likely). As with previous mobile games, this Zelda would be developed jointly by Nintendo and its partner DeNA.