Apple A14, Samsung Exynos 1080, Kirin 9000, Snapdragon 888, etc. have all used 5nm technology, and TSMC and Samsung each account for half of the four.
According to the current roadmap, 5nm will be slightly upgraded next year, and 3nm, which really appears as an iterative identity, will need to wait until 2022.
Following the disclosure of mass production of 3nm in 2022, Digitimes reported that TSMC plans to start production of the 3nm Plus enhanced version in 2023, and Apple will still be the first batch of customers.
If Apple's naming rules remain unchanged, then the corresponding A17 processor in 2023 should be used on the "iPhone 15". Of course, the M series processors on the Mac will definitely be used, and at that time, Apple will no longer have Mac products with Intel processors.
According to previous statements, 3nm will achieve 15% performance improvement, 30% power consumption reduction and 70% density increase, but the specific situation of 3nm Plus is still unclear.
It is worth mentioning that TSMC 3nm still uses FinFET fin-type field effect transistors, while Samsung's 3nm is a more advanced GAA surround gate transistor.