Samsung has finally started rolling out Nougat update for the Galaxy S6 and Galaxy S6 edge in India. Apart from the Android 7.0 Nougat build, the 1.3GB update also brings performance improvements and under-the-hood optmizations.
It also brings in the new leaner Nougat skin from Samsung which includes a bunch of new apps include Samsung secure and the new camera app which includes a floating shutter button. OTA updates do take some time to roll out and it should hit all devices before the end of March. You can also manually check for updates by heading into settings.