Samsung have offered the Samsung Galaxy S6 plenty of support by way of updates and owners of the handset have been very pleased by this. Of course they may have offered all the updates by way of feeling sorry for all the issues the device has. On the other hand they may have been trying to get the device in a state ready for the update to Android Nougat.
The Samsung Galaxy S6 is a handset that is badly in need of the Nougat update if ever there was one. Android Nougat comes with the resolution switch and this would mean that the battery life could be improved.
The Samsung Galaxy S6 will get more out of Android Nougat than the S7, due to the fact that the S7 offers specs that are better and the handset is able to balance out the power.
Should the Samsung Galaxy S6 get the Android 7.1 Nougat update owners will be able to get even more life from the handset as the battery life should get improved.