Samsung Galaxy A8 is due to be released in the 3rd quarter of 2015 and we have some unofficial specifications so take this with a pinch of salt. The phone is rumoured to have a 5.5 inches, 1080 x 1920 pixels Super AMOLED capacitive touchscreen protected with Corning Gorilla Glass 4.
The rumor mills add that it will run Android OS, v5.1 (Lollipop) on a Qualcomm MSM8939 Snapdragon 615 chip and a Quad-core 1.4 GHz Cortex-A53 or quad-core 1.0 GHz Cortex-A53 processor. It has 2 GB RAM, 16 GB internal memory and 64 GB capacity microSD slot. The rear camera is 16 MP, 5312 x 2988 pixels with autofocus and LED flash while the front camera is 5 MP, 1080p.
For connectivity, it has Wi-Fi, Bluetooth, NFC, Wi-Fi Direct and Wi-Fi hotspot. It will have a Non-removable battery with an unknown capacity and will be available in Pearl White, Midnight Black and Champagne Gold colours. This post will be updated with the real specs when it is finally released.