A leaker from China has named the date when Huawei will begin rolling out HarmonyOS 2.0. Apparently, the Mate 30, Mate 40, P40 and Mate X2 series will be the first devices to receive Huawei's new OS.
https://www.notebookcheck.net/HarmonyOS-2-0-release-date-named-for-the-Mate-30-Mate-40-P40-and-Mate-X2-series.539993.0.html