It will be something not used by Nintendo before, or their big competitors. I'm not expecting New or Pro. I don't think Super would be good if this is only a mid-gen upgrade. Super would go back to the Super NES, which was a successor to the NES. If Nintendo uses Super again for a console, it should be for a Switch 2.
I think it's going to be
Nintendo Switch Plus
or
Nintendo Switch Deluxe
Lifetime Sales Predictions
Switch: 156 million (was 73, then 96, then 113 million, then 125 million, then 144 million, then 151 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