They actually decided to use Angstroms for the initial sub-nanometre processes.
FTA:
Whatever, Chosun Biz also claims that TSMC plans to begin mass production of the node following N2 in 2028. Known as A14 in TSMC parlance, where the "A" stands for angstroms, the next unit of measurement down from nanometers, a 2028 release would put it exactly two years behind N2 and thus maintain a biennial cadence of rolling out a new node every two years.
And Intel talked about it in 2021: