Last year Huawei gave us a list of its devices that were to be updated to EMUI 8.0 based on Android 8.0 Oreo, but it was quite short - only the P10, P10 Plus, Mate 9, and Mate 9 Pro were on it. Now it seems that was just the preliminary list, since the company is already working on bringing the new software version to the even older P9 and P9 Plus. The news comes straight from a Huawei product manager, posting on its forums in China. Huawei P9 Plus There's no release timeline mentioned, only that the update will be made available at some point. Currently the team is busy adapting...
Source: https://www.gsmarena.com/android_80_oreo_update_with_emui_80_in_the_works_for_huawei_p9_and_p9_plus-news-30074.php