Android 7.0 just started seeding to the device and an early adopter was kind enough to share a screenshot detailing its changelog.
Samsung Galaxy C7 starts getting Android Nougat in China
The update is 1142 MB in size and brings new Samsung Experience and its various features. Improvements include Always-On Display, Multi-window, and the Settings menu.
Apps on the Galaxy C7 will install faster and will be more power-efficient once the Nougat update is installed. A new security patch is also part of it. Samsung kindly reminds all Gear IconX users to check if related apps are compatible with the upgrade and of course to make a back-up in case something happens.