Rumored details about the Apple iPhone 13 range and the third-generation Apple iPhone SE have been shared by display industry analyst Ross Young. It seems there will be four SKUs in the iPhone 13 series, with two of them capable of mmWave 5G connectivity. The iPhone SE 3 will apparently not be part of Apple's 2021 lineup though.
https://www.notebookcheck.net/Rumored-Apple-iPhone-13-and-iPhone-SE-3-details-appear-mmWave-5G-for-the-Pro-and-Pro-Max-2022-launch-for-the-third-generation-iPhone-SE.496663.0.html