Google has started rolling out an update for the Nexus Devices which are running on the Android version 4.3. The updates are made available for the Nexus 4, the galaxy Nexus, Nexus 7 2013 version, and Nexus 10.
The update is not a major one, and it will be updating your build number from JWR66V to JWR66Y. The update is just of 2 MB and it does not add any of the features but it only adds some security to the device.
It’s not completely verified whether will it add any of the features or whether it adds to the performance, but if we see the size of the update, which is just 2 MB much things cannot be expected out of it.