Xperia Z rolling out with an Android 4.2.2 jelly bean update

According to the report from the below source Sony's Xperia Z is rolling out with an Android 4.2.2 jelly bean update. The firmware update version is 10.3.A.0.423. same as that of Sony Xperia ZL. 

Its generic update is out in Spain and the Ukraine for the LTE model (C6603) and the carrier customised versions are also out in Austria, Czech Republic and the Netherlands. Along with it a generic Taiwan update is also out for the HSPA+ version (C6602).

Source: XperiaBlog