Samsung has started pushing out a new update to its Galaxy A3 (2016) smartphone. Weighing in at around 950MB, the update brings along Android Nougat (version 7.0). Currently, units in Germany are getting the update, although other regions should also get it soon. As is usually the case with OTA roll-outs, it may take some time for the update to hit your device. You can manually check for the update by heading to your handset's Settings menu. Via
Source: http://www.gsmarena.com/samsung_galaxy_a3_2016_starts_getting_nougat_update-news-25504.php