The Samsung Galaxy S6 has received a lot of support from the phone maker, much to the delight of owners. Samsung may have felt guilty as the handset has suffered from many issues. Perhaps they wanted to get the device ready so that it would be able to enjoy the update to Android Nougat.
The Samsung Galaxy S6 could do with the update badly as Nougat could help with the poor battery life that the device offers. Nougat comes with the resolution switch and the S6 battery could be given a new lease of life with this feature.
The Samsung Galaxy S6 may be able to benefit more from having the update to Nougat more than the S7. We say this as the specs are better on the S7 and so the device is able to balance out power better.
If the Samsung Galaxy S6 is given the update to Android 7.1 Nougat then owners could enjoy the device even more than before by getting more life from the battery.