There is no specific date given by the developers, but the game is definitely coming this year for sure, 2023 that is. Though, there have been no updates or announcements regarding Genshin Impact's Nintendo Switch release date or its availability as of December 2022. Genshin Impact will undoubtedly be released on the Nintendo Switch at some time, but Hoyoverse has not yet specified when. We were given a preview of what is to come back on January 14, 2021, in the Genshin Impact Nintendo Switch video, however, Genshin Impact Switch's release date is currently unknown.
The Genshin Impact Switch Version has been in development at HoYoverse for quite some time, and to be honest, it all started with the open-world JRPG's PlayStation, mobile, and PC versions. Well, Hoyoverse reiterated its commitment to porting the game to the Switch in May 2022 last year.
If you are concerned about Genshin Impact's Switch release, you may rest easy knowing that HoYoverse exclusively shared the Genshin Impact Switch video on the game's official YouTube channel back in January 2020.
The above reveal trailer confirms that the game will be available on the Nintendo Switch hardware even though it doesn't feature any actual Switch gameplay.
As mentioned earlier, Hoyoverse has not yet made any announcements regarding the Genshin Impact Nintendo Switch release date or potential delays. It can be assumed that hardware restrictions may be a problem given the size of the game and its update schedule.
Being a hybrid handheld/home console, the Switch is special because it has more power when docked. Some people also believe that Nintendo may have a problem with the game's microtransactions, however, this theory is less plausible given that there are microtransactions in other Switch titles.
Since the game was intended to be cross-stage and cross-save from the start, it is inevitable that a Nintendo Switch version will be released eventually.