Other than Final Fantasy XV director Hajime Tabata saying that he would like to make games for the Switch, there’s not much to go on here. There were some rumors for a remaster of a past game for the system, but we’ll believe it when we see it. There are also plenty of other Square Enix games slated for release for Switch this coming year, so it's not like the two companies are unfamiliar with one another. Reading what the director of the game had to say, it certainly seems as if it can be done then it will be done.
However, Final Fantasy XV is a very demanding game in terms of graphics and it remains to be seen if the Switch can handle such a game. If Skyrim is coming, then a game like this surely seems possible. Right?