For now, EMUI 9.1 is only available on the Huawei P30 smartphone, with its beta version available on a few other devices, but that will soon change. According to Huawei’s post on Weibo, the firm wants to update 49 of its devices with the EMUI 9.1 interface. The list of devices that will receive the update is:

Huawei Mate 20 Lite,
Huawei Mate 10,
Huawei Mate 10 Pro,
Huawei Mate RS Porsche Design,
Huawei Mate 9,
Huawei Mate 9 Pro,
Huawei Mate 9 Porsche Design,
Huawei P20,
Huawei P20 Pro,
Huawei P10,
Huawei P10 Plus,
Huawei Nova 4,
Huawei Nova 3,
Huawei Nova 3i,
Huawei Nova 2S,
Honor Play,
Honor 10,
Honor Play 8A,
Honor View 10,
Honor View 10 Lite,
Honor Note 10,
Honor 9,
Honor V9,
Honor 8X,
Huawei Nova 4e,
Huawei Nova 3e,
Huawei Enjoy 9 Plus,
Huawei Enjoy 8 Plus,
Huawei Enjoy Max,
Huawei Enjoy 9S,
Huawei Enjoy 7S,
Huawei Enjoy 9e,
Honor 9 Lite,
Honor 8X Max,
Honor 20i,
Honor 9i,
Honor 7X,
Huawei MediaPad M5 10.1,
Huawei MediaPad M5 8.4,
Huawei MediaPad M5 8.0,
Huawei MediaPad M5 Pro 10.8,
Huawei MediaPad 5T 10.1.

We do not know when will The Great Update begin.