looks like Sony is rolling out its Marshmallow update
to Xperia Z2,Xperia Z3, and Xperia Z3 Compact. Specifically, it appears that the
update is arriving for the D6503 version of the Z2, the D6603 Z3, and the D5803
Z3 Compact. Additionally, it's not yet happening in all parts of the
world - so far it's the US, Russia, Ukraine, Middle East and North Africa, and
perhaps Latin America.
latest firmware version is carrying a build number of 23.5.A.0.570, which
brings Android 6.0.1 Marshmallow update
in addition to general Marshmallow improvements
like Doze, this update brings a new Camera interface to these Xperia phones. It
also adds the February Android security patch to the devices.