Samsung seems to have improved internal hardware in its upcoming Galaxy J7 (2017) cell phone. This new variant carries model number SM-J730. This is further confirmed by a new GFXBench listing.
According to the listing, it has 5.5-Inch multi-touch display with 1920 x 1080 pixels resolution. It has 1.5GHz octa-core Samsung Exynos 7870 processor with ARM Mali-T830 GPU. It runs on Android 7.0 Nougat OS.
It has 3GB RAM with 16GB internal memory (11GB user available) and allows further expansion as well. The Galaxy J7 (SM-J730) is equipped with 12MP 1080p camera on the front and 12MP Auto Focus snapper at the back.
Usual connectivity options like Wi-Fi, Wi-Fi Hotspot, Bluetooth, GPS, NFC are supported. Listing also confirms presence of accelerometer, Proximity sensor, Gyroscope and Ambient Light Sensor.