Asus starts pushing out Android 8.0 Oreo for ZenFone 4

The update was released on December 29, so it may take up to a week to arrive on all ZenFone 4 devices. Be patient if it doesn't show up right away, but you can try to manually pull the update in a few days.
There are many changes included in the update, such as a more friendly setting UI design, a fully redesigned emoji set, as well as adaptive icons for consistent icons. Also, after the update, you'll notice some important changes to the launcher.
Obviously, picture-in-picture mode, autofill, smart text selection, and notification dots are all there as well. It's also worth mentioning Asus ZenFone 4 users will now be able to install apps from unknown sources: “hostile downloader apps can't operate without permission; users now permit the installation of APKs per-source.”
source: Asus via AndroidSoul
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