Samsung is reportedly planning to roll out Android 6.0 Marshmallow update to at least a dozen of its devices in the next few months. The firmware update schedule for the company's high-end handsets have surfaced online, giving a strong hint that 12 devices, including Samsung Galaxy Note 4, Note 5 and Galaxy S6, will get the software very soon.

Samsung's upcoming smartphone, the Galaxy S7 is expected to come running Android 6.0 Marshmallow, while other devices like Galaxy Note 5, Galaxy Note 4, Galaxy Note 4 Duos, Galaxy Note Edge, Galaxy S6 edge+, Galaxy S6 edge, Galaxy S6, Galaxy S6 Duos, Galaxy S5, Galaxy S5 Neo, and Galaxy S5 LTE-A will receive the firmware in the first quarter of 2016, according to a report by SamsungViet (via SamMobile). It went on to claim that Galaxy Alpha, Galaxy Tab A, Galaxy Tab S2 8.0, and Galaxy Tab S2 9.7 will get the software update in Q2 2016. 

However, the report noted that the firmware update schedule is "estimated" and could change. So, one has to take it with a pinch of salt.

It may be recalled that Phone Arena had earlier reported citing Samsung's Android 6.0 Marshmallow update schedule list it had obtained that the firmware will be first released to the Galaxy Note 5, perhaps in December, before making it available to Galaxy S6, Galaxy S6 Edge and Galaxy S6 Edge+ in January; Galaxy Note 4 and Galaxy Note Edge in February 2016; Galaxy A8 in March; and Galaxy S5 and Galaxy Tab S 10.5 in April. 

The report went on to claim that several devices like Galaxy Tab S2 9.7, Galaxy Tab S2 8, Galaxy Tab S 8.4, Galaxy Tab A 9.7, Galaxy Tab A 8, Galaxy Alpha, Galaxy A5, Galaxy A3, Galaxy E7, Galaxy E5, Galaxy J7, Galaxy J5, and Galaxy J2 still wait approval.