Alternative Android OS developer Cyanogen has expanded the Cyanogenmod (CM) device family with the addition of some LG handsets, including the G3 S, G3 Beat, G2 Mini, and Optimus L70.
All the aforementioned LG devices have been enabled to receive the Android 6.0 Marshmallow-based Cyanogenmod 13 nightly builds. It’s worth mentioning that CM13 nightlies are already available for Android One handsets as well as some other devices.
Needless to say, as these are nightly builds, they may contain bugs. Also, keep in mind that their installation could not only result in a bricked device, but also void your device’s warranty.