I was thinking what happened to the P20 series that nothing was mentioned about EMUI 12 since the official list was released at the end of October but it seems that in
EMUI 12: Huawei P30 Pro is in the list of phones that will be updated | nextpit
Huawei Mate 20 Pro Emui 12 Update : r/Huawei
Huawei P20 Series EMUI 12 beta - YouTube
Huawei P20-EMUI 12 Update wird nun ebenfalls verteilt