A Russian blog may have leaked more information on when Huawei's next line of flagships, the Mate 30s, will be released. This event will allegedly occur on September 30, 2019. Other news indicates that they will indeed run Android on their launch.
https://www.notebookcheck.net/The-Huawei-Mate-30-launch-may-not-be-far-away.429958.0.html