
The image below shows the rear of the Galaxy J2 (2016), including the Smart Glow ring around the camera lens. The ring will light up in different colors to signal incoming or missed calls or messages. It can also indicate a low battery level, and aid in taking selfies when using the rear camera.
Though future versions of Smart Glow will bring weather information and even measure the user's heart rate, on the Galaxy J2 (2016) functionality will be limited at first. However, based on the functional potential of the feature, we would not be surprised if Samsung ends up including it in higher-end devices next year, including, possibly, even the Galaxy S8. The J2 (2016) itself will be officially unveiled in India later this week.
Update:
Well okay, here's the rest of the Galaxy J2 (2016) in gold, as well:
(Thanks for the tip, Ahmed!)