Sony has started to released the November security update to two of its devices, the handsets include the Sony Xperia Z5 and the Xperia Z3+.
The November security update comes with Google’s security patch for November and it has been released as an over the air update for both handsets.
The update is apparently available for all variants of the above devices across multiple reasons and you can check to see of it is available from the settings menu on your device.
Source GSM Arena