https://wccftech.com/android-oreo-rolling-out-for-the-zenfone-4-selfie-and-verizon-samsung-galaxy-j3/

It might seem tad redundant to talk about Oreo when Pie has been out for a few months, a lot of phones still run older versions of Android and are in dire need of an upgrade. Granted that it is impossible for all devices to get a newer version of Android, a good chunk of them never see a newer version of the operating system ever. Earlier this year Asus promised that it would update all eligible devices to Android Oreo. Today, the Asus ZenFone 4  Selfie is beginning to get its Oreo update. 

The update has a software version of 15.0400.1809.405. Asus says it will take about a week to roll out to all users. In addition to everything that Android 8.0 and 8.1 bring, like adaptive icons and notification channels, the update also has version 5.0 of the ZenUI skin. That means the software experience should be identical to that of Asus’ latest phones like the Zenfone 5Z.