Still one generation behind Taiwan's fabs
Which are ramping up '3nm' production right now, and are scheduled to bring '2nm' online in 2025.
So the breathless press reports that Apple will get all their chips from these Arizona fabs are totally wrong, but Apple does need some older chips since not everything they sell contains the latest and greatest. But they won't be able to supply more than maybe a third of Apple's chips, the rest will have to continue to come from Taiwan.
Still, that's an improvement, and in case of trouble in Taiwan presumably the Arizona fabs could be upgraded to the latest a lot more quickly than new fabs could be built from scratch.