Samsung confirm that Android 7.0 Nougat for the Galaxy Note 5 and the Galaxy Tab S2 is being developed as well. Samsung is working hard to picking up the pace this time around and users are certainly going to like that. However, not because development has started doesn’t mean the firmware is going to be any time released soon.
We likely to see Samsung couple of months down the road to get the update ready for the Galaxy Note 5 and the Galaxy Tab S2. Nougat hasn’t even confirmed yet when is going to be released for the Galaxy S7 and the Galaxy S7 edge, both devices may not get Android 7.0 before 2017.