The Official Legend of Zelda Thread: Echoes of Wisdom Out Today, September 26

[Nuvendil]

Pavolink said:
I wonder... According to Nintendo, the footage we saw at the Switch teaser is not the Switch version... Then how it will look? Better I suppose?

Or am I wrong and Nintendo never said that?

Aonuma did mention visual improvements in an interview, yes.  We don't know to what degree.