We all know that Android Pie has been released and probably everyone is waiting for Lineage OS 16 ROM builds for their devices. If so, then you would be happy to know that few unofficial build of Lineage OS 16 is now available for Nexus 6, Xiaomi Mi 5s and Mi 5s plus.
The LineageOS 16 branch is ready at least with basic LineageOS branding.
Well, this is just the beginning. It will take a while for your Android device to get Lineaeg OS 16 (based on the development friendly your device is and various other factors).
For more builds of Android Pie based Lineage OS 16 ROMs, visit the Lineage OS 16 Supported List NOW.
How to Install Lineage OS 16 on Nexus 9, Mi 5s and Mi 5s Plus:
Well, if not Lineage OS 16, you can still browse the Android Pie downloads list for listed Android devices with Android Pie:Android Pie Downloads list
Hope you get Android Pie for your device soon. :)