Android 6.0 Marshmallow update schedule for Samsung, Lenovo, Motorola, OnePlus and others
Android 6.0 Marshmallow updateAndroid via Twitter

Samsung recently released the Android Marshmallow update to the unlocked versions of the Galaxy S6 series and Note 5 in select markets. Now, the AT&T models are slated to get the new OS updates in the U.S. soon.

AT&T customer care representative confirmed the news during a live chat session with consumers on the official company website. The executive, citing an official release, revealed that the Android Marshmallow roll-out process will commence for the Note 5, March 11 onwards, whereas the Galaxy S6 series will get the new update from March 14 onwards. [Check out the screen-shot of the live chat session between AT&T executive and the customer, HERE, courtesy XDA Developer Forum]

AT&T Galaxy Note 5 owners can check for OTA (Over-The-Air) update on device by going to—

Settings >> About phone >> System update.

Since the OTA roll-out is usually staged in phases, it will probably take a day or two to cover all the regions.

The main talking point of Android Marshmallow is the Doze power saving feature. Once activated, it will extend battery life by at least 30 percent, depending on the device's internal hardware.

Also read: Google Android 6.0 Marshmallow: 7 key features you need to know

Other notable features include the new "Now on tap" search feature, new security feature verified boot system, leaner and faster Chrome browser, improved contextual assistance feature and auto back-up from where all apps' user data (less than 25MB) will automatically be stored in Google Drive, support for more international languages, new Google photos app and more.