That would be awesome. Especially considering Apple has moved away from focusing on creative professionals in favor of becoming a lifestyle company. They don't even need to use to the sort of hardware that the Xbox One X is using. The Switch has already demonstrated what can be done and even the PS Vita before that which utilized a quad core (SGX543MP4+) implementation of the SGX543MP2 in the iPhone 4s. The iPad 3 used the MP4 but since it was driving twice the amount of pixels, I found that gaming performance on the 4s and iPad 2 was actually superior albeit at lower resolutions.
Yeah, and the A10X especially with active cooling in the ATV is easily head and shoulders above the Switch.
If they keep updating that to the new *X part every year, it would even sneak up on the base XBO scarily fast (though probably right in time for the generation after).