LG is currently rolling out the Marshmallow Android 6.0 update to G4 owners in Europe. Multiple reports have appeared of some lucky customers receiving the update notification and subsequent download.
The update (H81520A) brings with it a bunch of improvements for the LG G4, which include a simplified app settings page, the addition of silent mode to sound profiles, LG Bridge renamed to LG Airdrive, as well as seeing apps request access after being installed. You'll be able to see the full changelog on our forum.
Have you received anything on your LG G4 yet?