In late May, Sony has rolled out the Android 4.0.4 Ice Cream Sandwich OS for the Xperia arc, arc S, Xperia neo and neo V handsets. The manufacturer has already seeded the ICS update for Xperia ray handset. Now, the manufacturer has also started pushing out the ICS update for the Xperia mini pro handset.
Sony has completed testing the ICS updates for Xperia mini, Xperia active and Live with Walkman handsets and they will be rolled out eventually in coming weeks. If the update is still unavailable for your device, you can track which SI numbers have been updated to ICS build here.
ICS update will bring Face Unlock feature, improved text input/spellchecking, data usage controls, re-sizeable widgets, folders, system bar enhancements and more.