A new software update has been made official by Sony for their Xperia XA1 and Xperia XA1 Plus devices. The software updates will come with build number 40.0.A.6.189 and 48.0.A.1.131 respectively for both the devices.
Even though the Android version still remains at 7.0 Nougat for the updates, it features updated Android security fixes for January 2018 including fixes for the Meltdown and Spectre Android security vulnerabilities that were uncovered recently.
The 2016 Sony Xperia E5 will also be receiving a software update with the build number 37.0.A.2.248 and will bring security patches for the July 2017.
As all the updates are done OTA (Over the Air), the updates should start hitting respective devices soon.