This newest update bumps Xperia XA2 and XA2 Ultra builds to 50.1.A.4.102 as well as updating their security measures to January. Xperia L2 gets its build updated to 49.0.A.3.72; right now we do not know what other features does it get. Since there is very little info on both updates, feel free to let us know whether or not you already have the update and how is it working. Kudos.