Sony earlier this week started rolling Android 4.3; Jelly Bean for Xperia SP, and from today it begins for Xperia T, Xperia TX, Xperia V. New functionality includes:

- Google's Android 4.3; Jelly Bean as standard - bringing Project Butter performance & UI response optimisation and smoother graphics

- Sony is uplifting its entire native app portfolio to the latest versions: Messaging, Smart Connect, Small apps, TrackID, Sony Select and more

- Sony's Media apps: WALKMAN, Album and Movies, with Sony Entertainment Network cloud service integration - Sony Entertainment Network & PlayMemories integration with a more intuitive UI, offering access to both local and cloud content

- The launch of Sony's custom interface experience: "Xperia Themes", with downloadable UI packs from Sony Select

- The latest Android security enhancements, matched with Sony's mobile enterprise solution: Xperia in Business

- Battery STAMINA Mode - updated version of Sony's power management app, now with refreshed interface and more smart options for prolonging battery life

As usual, timing & availability of the updates may vary by market & carrier.