The only way I see it touching Xbox Series S is if the dock actually has more to it this time (a chipset, etc.)
I say the console will be about PS4-level, maybe lower at Xbox One-level, and docked it will be around PS4 Pro.
If it's better than a Steam Deck in specs, it probably won't be by a half a gen or something.
Lifetime Sales Predictions
Switch: 161 million (was 73 million, then 96 million, then 113 million, then 125 million, then 144 million, then 151 million, then 156 million)
PS5: 115 million (was 105 million) Xbox Series S/X: 48 million (was 60 million, then 67 million, then 57 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima