Sony Xperia XZ1 47.1.A.12.119 update is now available for download. The new patch has added latest Android security patches for the month of March. This 47.1.A.12.119 update for Xperia XZ1 Compact and XZ Premium is also expected to roll out soon.
The latest Android March Security patch fixes Common Vulnerabilities and Exposures (CVE) in the open-source Android OS. Recently, Android 8.0 Oreo update was also released on the Xperia XZ, however, there are some reports of degraded performance and battery life issues.
Sony Xperia XZ1 47.1.A.12.119 update software will gradually release to everyone. You can also check manually for updates, go to Settings > About device > System update.
Make sure you have enough charge on your device at least 60% to 70% before downloading the update.