Android pie is available for last year launched flagship  grade Asus ZenFone 5/5z and for two year old mid range ZenFone 4 series.ASUS has also rolled out stable Pie for other mid-range devices including for the ZenFone Max Pro M1, Max M2, and Max Pro M2 and now, Android Pie is available for Asus ZenFone 5 Lite.

The Android Pie update for the different ASUS ZenFone 5 Lite regional variants comes with build number version  WW-16.0610.1905.79. In the changelog, only mentioned about "Android P Os upgrade" , without mentioning any other details about update.
Asus is now moving from the ZenUl and bringing near to stock android to it's new smartphones like ZenFone 6 (ASUS 6z) as well as the older ZenFone 4 Max. However, users are expecting the Android Pie update with stock Android experience in there ZenFone 5 Lite devices.

How to Install :-
Download full package of update and place that ZIP in the root directory of your smartphone’s internal storage. This should have multiple files inside it but if it has just one i.e. another ZIP file, then extract the outer ZIP and place it in the internal storage. The system will automatically detect an update package and prompt you to update your ZenFone 5 Lite