Sony has started rolling out new updates to its Xperia XZ and X Compact smartphones. Arriving as build number 39.0.A.3.30 for the former and 34.1.A.3.49 for the latter, the updates bring Android security fixes for the month of November.
It isn't yet known what else (if at all) is included in the updates.
As is usually the case with OTA roll-outs, it may take time for the update to hit your device. Meanwhile, if you feel impatient, you can manually check for the update by heading to your handset's Settings menu.