We can confirm that Sony has begun to roll out Android 4.4.4 firmware for the Xperia Z2 and Xperia Z2 Tablet, in the form of build number 23.0.1.A.0.167. New features for Xperia Z2 and Z2 Tablet owners include PS4 Remote Play, Hi-Res Audio playback from PCM and DSD files (via 3.5mm audio jack), DSEE HX technology within the WALKMAN app as well as the option to customise headphone settings for various headsets.
Other new features include new edit options within Quick settings, Smart screen rotation, “Record Screen”, Ultra STAMINA Mode (limiting a number of phone functions) and Bluetooth unlock (phone unlocks when any of Sony’s Bluetooth accessory is in close proximity).
On the camera side, an update to Sony’s Smart Social Camera means that the Xperia Z2 and Z2 Tablet owners can now take advantage of the latest Xperia camera apps such as Sound Photo, AR fun, Multi camera and Face in.
The update is already live in a number of regions for the Xperia Z2 (D6503) including Middle East, Latin America, Russia and a number of Asian countries (Thailand, Malaysia, Philippines, Singapore, Indonesia). The HSPA+ version (D6502) is live in Singapore, Thailand, Ukraine and Vietnam at time of posting. The update for the Xperia Z2 Tablet (SGP521) is also live in Latin America and Middle East.
Official changelog from Sony
– Now includes Ultra STAMINA Mode for up to one-week use by simplifying your Xperia
– Bluetooth unlock – use your Sony SmartWear to unlock your Xperia without a password
– Many new Xperia camera apps: Face in, AR fun, Multi-camera & more
– Smart screen rotation – your display moves with you to remain readable
– Quick settings – customise your settings to access what you need quickest
Via Sony Mobile Blog.