Since July of last year, Square Enix has been releasing Final Fantasy Pixel Remaster for PC, iOS, and Android.
Recently, known Nintendo leaker NateTheHate claimed in a video that Final Fantasy Pixel Remaster will launch for the Switch in 2022, though did not elaborate further on when in 2022 that’s expected to happen.
Back in July, Square Enix said that Final Fantasy Pixel Remaster could launch for more platforms beyond PC and mobile devices if there was enough demand for that- and there certainly is quite a bit of demand for that (and has been for some time), so it would be surprising if this rumour turns out to not be true.
Pixel remasters of the first Final Fantasy games are available right now, while the sixth and final one will be coming in February.