A new application called ‘Xperia Privilege‘ is currently being pushed to Sony Xperia Z (C660X) owners. The app is currently in a beta phase and offers promotions such as discounts on apps as well as competition prizes. Currently Sony is offering Xperia Z owners a £20/€25 voucher to spend on any part of the Sony Entertainment Network (Music Unlimited, Video Unlimited, PlayNow memories and the PlayStation Store).
The app is available to download for all Android devices, however trying it on an Xperia S just brings up a blank screen. Looks like the app is only active for Xperia Z owners at the moment. We would expect promotional content available to all Sony Xperia owners in due course.