Seems like Nougat will soon be rolled out to the Samsung Galaxy A9 Pro. The device has been spotted on both GFXBench as well as Geekbench, with the listings revealing Android 7.0 OS. This indicates that the update is currently under testing.
The phone was launched back in May last year, and it came with Android 6.0.1 Marshmallow out of the box. No information on exactly when it will get Nougat. Here's hoping that testing goes smoothly and the roll out begins sooner rather than later.