ZUK Electronic has ever annouced the full new Android 6.0 OS is being debugged. Recently ZUK CEO has also released the ZUK Z1 phone latest Screenshot on Weibo, which shows this version of ZUI is ZUI 1.5.044, which is based on the latest Android 6.0 Marshmallow.
The screenshot has leaked the new ZUI version processing, and compared with the previous ZUI Processing, it added the screenshot and the real model runninf photos, judging from which we believe the Android 6.0 version ZUI adjusting process will come to the end soon. It will be not long for the Z1 users to get the ZUK Z1 Android 6.0 firmware update.
ZUK MobileIt is said the new Android 6.0 operating system will bring multi-new functions, such as More intelligent and efficient battery management, More privacy options and control (application access control), Native Fingerprint Identification Support and Support seamless migration between old and new phones.
ZUK MobileZUK Z1 Android 6.0 firmware update date will be at the end of the year, which is sure to be next month. Let's stay tuned for the later news.

Source from: http://www.androidmall.co.uk/blog/zuk-android-6-0-zui-exposed/