Yesterday we reported that Android 5.1 is now official and is already in Android One devices, but there is a rumor about the existence of an unknown 5.2 build. This source seems to show the Nexus 5 running the ROM.
It’s usual to see this update first hand in Nexus but this jump from 5.1 to 5.2 in such a short time is a little bit odd. With this fast update there is a possibility of a custom ROM intentionally reporting a false Android version.
If this is true, probably Google might have a big surprise coming soon.