I'm pretty sure Nate directly confirmed it's a Switch Pineapple.
I realize I'm just another guy not providing a direct link, but Aonuma said it publicly in the Direct itself shortly following the trailer.
@Raccoon, I'm curious as to how you expect Apple to match Nintendo on third party software, let alone first party. The Apple we know could absolutely make a device that kills Nintendo's upcoming hardware CPU performance and perhaps on GPU performance even after DLSS (as they'd be expected to be several process generations ahead of Nintendo), but that same Apple would need several philosophical shifts when it comes to API and middleware strategy to actually make it easier to develop for - especially for games targeting PS5 and Xbox. I could totally see a future where Apple makes a more attractive device than the upcoming Switch, but the Switch is the one with all the games.
Don't get me wrong; unlike most here, I don't think an Apple gaming hybrid would be dead on arrival. But I feel the stars would need to align for it to topple the Switch ecosystem.