Huawei had announced a roadmap for its EMUI 10 beta updates back in August. The company now has a similar roadmap for the release of the stable version of the skin which will be released to many more devices.
The rollouts will begin after the launch of the Huawei Mate 30 phones in the second half of September. Word is that the Mate 30 phones will come with Android 10 powered EMUI 10 right out the box, though it will come without any of the Google Play services.
Huawei and Honor flagships released after late 2018 will have EMUI 10 by the end of the year but older flagship phones and mid-range devices will have to wait until 2020 for the update.
It, however, is not clear if tensions with the US would affect this OTA rollout schedule....