The next Sony software rollout for Xperia Z1 and Xperia Z Ultra is starting.

Sony has been working to blend the Sony Xperia software with Google's Jelly Bean release to add a few performance tweaks along with some new functionality including:

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

• Launched with Xperia Z1, Sony is bringing Sony's Smart Social Camera to Xperia Z Ultra - lets you download, access and enjoy "Xperia camera apps" directly from within the viewfinder

• Sony is also uplifting Sony's entire native app portfolio to the latest versions, bringing tweaked / improved / current experiences for Messaging, MyXperia, 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 seasy access to both local and cloud content

• The launch of Sony 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

Sony said the Android 4.3 rollout for the remaining Sony Xperia products is right around the corner.