The source of the leak is AllAboutSamsung. Take it with a pinch of salt.

– Snapdragon 660 CPU,
– 6GB of RAM and 128GB internal storage, microSD card slot,
– Android 8.1 Oreo with Samsung Experience UI,
– 3720mAh battery,
– 6.28′ AMOLED Infinite Display, 2200 x 1080p,
– square-shaped fingerprint scanner & vertical 4x camera. 24mpx, f/1.7 x 5mpx, f/2.2 x 8mpx 120º wide-angle main camera setup, 8mpx selfie shooter.

Samsung Galaxy A9s will be officially announced on October 11th.