Looks like the Huawei Mate 9 could be receiving the Oreo update soon. The device with Android 8.0 on board has been spotted listed on benchmarking website Geekbench. For what it's worth, this is not the first time we are hearing about the Mate 9 Android 8.0 update - back in April this year, we saw a glimpse of Oreo-powered Mate 9 (the ROM was in early development stage at that time). A benchmark appearance doesn't guarantee, but does indicate that final testing is going on and if everything goes fine, roll out should begin sooner than later. Source | Via
Source: http://www.gsmarena.com/oreo_update_for_huawei_mate_9_could_be_arriving_soon-news-27432.php