Sony Mobile has rolled out a new update to Xperia Z3+, Xperia Z5, Xperia Z5 Compact and Xperia Z5 Premium with the build number 32.2.A.0.305. So this will replace the previous build 32.2.A.0.253 from the new build 32.2.A.0.305. This remains in Android 6.0.1 Marshmallow firmware, but this new update has brought new august security patches. Also users claims that there's a new feature called Battery Optimization which Sony has included to increase the battery lifespan.You can find it in Settings >>About >>Status >> Battery Optimization. Check the full change-log below.
The latest security enhancements included
All of our latest bug fixes and improvements
Audio volume enhanced in notifications and ringtones
Improved handling of Bluetooth connected devices
So far Xperia Z5 (All International Variants),Xperia Z5 Compact (All International Variants), Xperia Z5 Premium (E6853), Xperia Z3+ (All International Variants) have received the update only for some area. It will arrive to other devices shortly. So if you received this update feel free to send us the impression about this.