Sony has just released a new firmware update for the Xperia Z flagship. It's still based on Android 4.1.2 Jelly Bean, but brings quite a lot of improvements.
The most notable change is the improved camera quality. The Sony fans probably remember (http://blog.gsmarena.com/how-to-take-better-shots-with-your-sony-xperia-z-use-burst-mode/) the Xperia Z burst samples had better processing than the ones captured in regular (Auto) mode.
[size=16px !important]Maj 10.1.1.A.1.253 (4.1.2) en cours de d