Analyst Ming Chi-Kuo recently predicted that Apple will bring mmWave and standard 5G iPhone 12 models to the market at the same time, allaying fears of a drawn-out iPhone 12 release timeframe.
https://www.notebookcheck.net/Ming-Chi-Kuo-predicts-mmWave-and-standard-5G-iPhones-will-arrive-simultaneously.450153.0.html