Sony has begun rolling out the Android 6.0 Marshmallow update for the entire Xperia Z5 lineup in Japan - Xperia Z5, Xperia Z5 Compact, and Xperia Z5 Premium. The Marshmallow update for Sony Xperia Z5 has been already available in Turkey. The new Marshmallow-based firmware improves on the battery manager, app permissions manager, notification area customizations, and it brings a new Xperia Home launcher as well as an updated Camera app. Sony UK announced the Marshmallow rollout for the Xperia Z5 series, the Xperia Z4 Tablet, and Xperia Z3+ units will begin on March 7. Now that Sony is seeding Marshmallow updates in Turkey and Japan, we believe March 7 should be the date for the global release for those updates. Thank you, Chary, for the tip! Source ...
Source: http://www.gsmarena.com/sony_xperia_z5_series_get_android_marshmallow_in_japan-news-17052.php