Sony outs list of Xperia smartphones that will get Android 6.0 Marshmallow

Android 6.0 Marshmallow has recently rolled out to Nexus and Android One devices. And like Motorola and HTC, Sony has also released their list of devices that will receive the Marshmallow upgrade.

Android 6.0 Marshmallow will be available for:
Xperia Z5
Xperia Z5 Compact
Xperia Z5 Premium
Xperia Z4 Tablet
Xperia Z3+
Xperia Z3
Xperia Z3 Compact
Xperia Z3 Tablet Compact
Xperia Z2
Xperia Z2 Tablet
Xperia M5
Xperia C5 Ultra
Xperia M4 Aqua
Xperia C4

As usual, software rollouts are a phased process so timing and availability will vary by market or operator.

source: Sony