OnePlus Mini specs apparently come on the Amazon.
The device includes:
a 5-inch 1080p touchscreen, the panel will be covered with Gorilla Glass 3,
MediaTek MT6795 with a 2.2 GHz octa-core Cortex-A53 CPU and a PowerVR G6200 GPU. Some past leaks talked about the Qualcomm Snapdragon 801.
2GB of RAM
a 2,450 mAh
Android 6.0 Marshmallow on board;
The metal frame that we've seen in the leaked pictures is confirmed too, and it's said to come with Side Touch functionality, which sounds similiar to Samsung Galaxy S6 Edge.