Pokémon Ultra Sun and Ultra Moon developer Game Freak has explained why it decided against bringing the games to the Nintendo Switch console. “We’ve been working with the 3DS hardware since Pokemon X and Y,” Pokémon Ultra Sun and Ultra Moon producer Shigeru Ohmori told GameSpot. “Even then we wanted to get the maximum power and maximum potential out of the 3DS, and ever since then we’ve continued to try [to do] that.
“With X and Y we thought we’d got as much as we could out, but then Sun and Moon came along and we pushed even harder and got as much as we could out of the system at that time. And now, again, with Ultra Sun and Ultra Moon, we’ve tried to make this the pinnacle of our work with the 3DS system and make it a culmination of all our efforts to get the absolute most out of the system that we can.”
One of the reasons people were surprised at the lack of a Switch version was because of the heavily-rumored Pokémon Stars. When asked whether the upcoming duo of Pokémon games could eventually come to Switch, Ohmori replied by saying “there are [currently] no plans for that in particular.” Pokémon Ultra Sun and Ultra Moon are set to launch launch exclusively for Nintendo 3DS on November 17.
Source: GameSpot.com
Pokémon Blog 
One thought on “Game Freak explains why Pokémon Ultra Sun and Ultra Moon aren’t coming to Nintendo Switch”