Users of Sony Xperia Z, Xperia ZL, Xperia ZR and Xperia Tablet Z will soon receive the official Android 4.4.4 KitKat update after Telstra confirmed the platform at the Web site. Moreover, PTCRB seems to support the upcoming firmware update with a new certification carrying the build version 10.5.1.A.0.283.

Sony Xperia Z at Telstra

Australian network carrier Telstra enlisted the Sony Xperia Z as one of the devices getting an Android 4.4.4 KitKat update soon. According to the company's official Web site, the Sony Xperia Z is likely to receive the Android 4.4.4 KitKat software upgrade on September 22.

Android 4.4.4 KitKat firmware for Sony Xperia Z is currently being scheduled for testing phase and has been delayed for test submission by two weeks as ordered by Sony Mobile based on the comment. Other Sony devices included on the update list are Xperia Z2 with Android 4.4.2 bug fixing release currently rolling out, Xperia Z1 and Xperia Z1 Compact with Android 4.4.4 KitKat under testing phase.

PTCRB Latest Certification

PTCRB posted new firmware certifications for older Sony Xperia Z comprised by Xperia Z, Xperia ZL, Xperia ZR and Xperia Tablet Z. These certifications seem to support Telstra's Android 4.4.4 KitKat update for Xperia Z smartphone due to the significant changes on the numerical codes.

Xperia Device

Current Certification

Previous Certification

Xperia Z C6603

10.5.1.A.0.283

10.5.A.0.233

Xperia ZL C6503

10.5.1.A.0.283

10.5.A.0.233

Xperia ZR C5502, M36h

10.5.1.A.0.283

10.5.A.0.233

Xperia Tablet Z LTE SGP321

10.5.1.A.0.283

10.5.A.0.233

Similar with the previous Android 4.4.2 KitKat release, Sony Mobile used the same firmware versions for all older Xperia Z devices as shown on the list of build versions above. However, there are no confirmed details yet on what exactly the Android 4.4.4 KitKat will bring to these Xperia gadgets.

For users curious on what can be expected on the upcoming software upgrade, here is the official change log of Android 4.4.4 KitKat based on Xperia Z1 smartphone:

- Android 4.4.4 KitKat latest enhancements and security updates from Google

- Updated and improved camera experience

- Improvements to Google Voice, Contacts, Google+ and music streaming

- Latest versions of Sony exclusive apps and services

- Latest bug fixes, optimisations and improvements