Although it should receive the Android Pie update in April according to the official update roadmap, the Samsung Galaxy A8 (2018) has recently surfaced on Geekbench running Android 9. This happened quite a few times already, so Samsung might update this handset earlier than expected.
https://www.notebookcheck.net/Samsung-Galaxy-A8-2018-running-Android-Pie-spotted-on-Geekbench.393706.0.html