TSMC is anticipating great demand for its upcoming 5 nm production process, as more and more smartphone integrators are looking to outfit handhelds with 5G modems. The 3 nm process coming in 2022 is expected to bring considerable performance gains for AMD's desktop PCs, and if TSMC sticks to this release schedule, we could be seeing sub-1 nm semiconductors by 2025.
https://www.notebookcheck.net/TSMC-on-track-for-mid-2020-5-nm-production-3-nm-schduled-for-2022.447034.0.html