The only difference from the upcoming device, and the one that was released, is in the memory. The one that got released in the US has 2GB of RAM with 16GB of internal storage, while the upcoming version should have 3GB of RAM and 32GB of internal storage.
The case of the upcoming device is made of meta and will be offered in four colors: Black, Light Blie, Gold and Pink. The device will also feature a 5-inch LCD display panel with 1280×720 resolution. That means that the display will have 16:9 aspect ratio. Also, it will be powered up by Exynos 7570 chip, alongside with the ARM Mali-T720 GPU. The CPU will be clocked at 1.4GHz. The internal memory of the device will have an option to be expendable with an microSD card. The maximum limit of the internal memory should be 256GB, but there is not confirmation about that yet from Samsung.