Chance Miller is saying that TSMC begins pilot program of 3nm chips, could be used in 2023 iPhones and Macs.
This will be huge for Macs if it happens, because this means more efficiency for the same power wattage and more efficiency, and though it won’t be till 2023, it could be major for the new Pro Macs with smaller chips making less heat, since the likely multiples of the M1 Max and M1 Pro will certainly create more heat.