Here is a website with more unofficial information on the new Nougat update expected (unofficially) for January 17. It also provides information on how to prepare your Galaxy S7 to receive it.
Android Nougat brings a number of major improvements and upgrades, marking the Google’s most advanced software release to date.
These include a number of new emoji, Google’s new GIF keyboard, and “launcher shortcuts” which adds 3D-Touch-esque features to the homescreen.
However, according to an unofficial source it appears the new Android download is being rolled out slowly, and Beta testers of the operating system seem to be getting priority. It may take a few weeks before everyone gets access to the latest features.
To check if your Samsung S7 phone is ready to updated head to Settings > About device > download updates manually
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