Sony Mobile is currently rolling a new firmware update for the Xperia X and X Compact, which moves the build number from 34.4.A.2.97 to version 34.4.A.2.107, and includes the 1 August 2018 Android security patches.
A similar update is rolling to the Xperia XA1 series, including the XA1, XA1 Plus and XA1 Ultra, moving the build number from 48.1.A.2.21 to version 48.1.A.2.50, and includes the 5 August 2018 security patches. No other changes have been noted in either update.
Smartwatch 3 Android Wear Lollipop update (5.0.1) now rolling
Xperia SP and Xperia TX Android 4.3 “Testing complete, Awaiting rollout” says
Here is Android Lollipop running on the Xperia Z3 [Video]
Sony Xperia Android 5.1 changelog detailed [Video]