Asus flagship smartphone launched last year so-called Asus Zenfone 5z has now received the Android 10 update. The Asus Zenfone 5z Android 10 official update rolled out via OTA. 
Asus Zenfone 5z Android 10 update

The Asus Zenfone 5z powered by Snapdragon 845 octa-core processor. It runs on top with Zen UI based on Android pie during the launch. Now its got upgraded into Android 10 with Zen UI 6.0 on top. 

The Asus Zenfone 5z runs on Zen UI 6.0 features with new Dark mode feature. While you can enable dark mode in settings or by turning on the battery saver.

Also, the new update will suggest the actions for the notification received right from the notification panel itself.

Similarly, you can decide the app notifications are interuptive or gentle.

The Asus Zenfone 6z Android 10 update as rolled out through a OTA. However, its a stagged roll out so, it will reach each users batch by batch.