Samsung is taking more time than expected in seeding Android Marshmallow update to its devices but it is better late than never. After having released the firmware to all the flagship devices, it has started rolling it out to mid-range and high-end handsets. However, there are still a few devices like the Galaxy A7 (2016), Galaxy J3 (2016), and Galaxy Alpha that are yet to receive it.
Google is expected to release its new operating system, the Android 7.0 Nougat, by the end of this summer, so Samsung is likely to seed last year's Android 6.0.1 Marshmallow update to its eligible smartphones soon.
The South Korean technology giant has rolled out the firmware update to the Galaxy A9, Galaxy A7 (2015), Galaxy A5 (2016), Galaxy Tab S2, Galaxy A8, and Galaxy On7 (SM-G600F). The Galaxy J5 (2016) and Galaxy J7 (2016) released in the U.S. and some regions in Korea run the Android 6.0.1 Marshmallow but those released in other markets are yet to get the firmware.
Samsung hasn't announced the Android 6.0.1 Marshmallow update schedule for its eligible devices but it is likely to happen before the release of the Android 7.0 Nougat. Most of the handsets that receive Marshmallow are also likely to get the yet-to-be-released firmware.
It may be mentioned that Samsung has rolled out Android 6.0.1 Marshmallow update to the Galaxy S5, Galaxy S5 Sport, Galaxy S6, Galaxy Note 5, Galaxy S6 edge, Galaxy S6 edge+, Galaxy Note Edge, and Galaxy Note 4.