It was pre decided that Samsung Galaxy A series of 2016 will must get an update to 7.0 Nougat and in order to full-fill its commitment Company already testing Nougat for said device - a Galaxy A5 (2016)
posted a score to the Geekbench database running Android 7.0.
Note that this was the version with an Exynos 7580 Octa chipset, something that may have an effect on timing (the A5 2016 model is also available with a Snapdragon 615 chipset).
We poked around to see if any other phones of the 2016 A lineup put in a score. The most recent results we found were still on 6.0.1. Still, Samsung will probably release the update for all devices at once, In same way Samsung rolled update to 6.0 Marshmallow after all.