Today, Sony has announced the Android 4.4.4 update for the Xperia Z2 and Xperia Z2 Tablet. The rollout has started already, but as usual it might take a while for the new software to reach your particular device - depending on where you are and if you bought a carrier-customized unit or not.
Accompanying the decidedly small OS update are some new features that
Sony baked in. Both the Z2 and the Z2 Tablet will get PS4 Remote Play
functionality, following in the footsteps of the Z3 family. This means
the smartphone and tablet will be able to act as a remote screen and to
connect to and control your games on the PlayStation 4.
The Z2 series also receives support for playback of PCM and DSD audio
files via the 3.5 mm jack, in addition to the USB Hi-Res playback. The
Walkman app now has Sony's DSEE HX tech built-in, which enhances the
sound of your MP3s or AACs as well as songs you bought from Sony's Music
Unlimited service. On the music front, you'll also be able to select
optimized settings for different Sony headsets you may be using.
The Z2 family gets access to the latest Xperia Camera apps, as well
as the newest Battery Stamina mode. The Xperia Z2 can use Ultra Stamina
mode too, which lets it sit in standby for more than a week apparently.
Smart screen rotation prevents unwanted rotations, while the new
Record screen feature lets you do just that - record a video of what
you're doing on the screen. Finally, the Z2 and Z2 Tablet now have
Bluetooth Unlock, which automatically unlocks them when they are in
close proximity to Sony's SmartBand,