If a tweet from a known leakster has to be taken into account, Sony Xperia Z5 range of smartphones will start receiving the Android 6.0 Marshmallow update next month followed by older Xperia models.
— Ricciolo (@Ricciolo1) December 2, 2015
Some time ago, Google officially revealed the Android 6.0 Marshmallow, their next generation of Android operating system. Android 6.0 brings lots of features, improvements and fixes over Android 5.0 Lollipop. You can read all about Android M, including new features and detailed changelog by clicking here.
We have also covered the Android 6.0 Marshmallow update timelines for various smartphones from different vendors. You can read our coverage by clicking here.