Spotted on Weibo.com and with the DxOMark logo, the picture of the front panel shows the upper notch in full details with selfie camera, notification LED, and earpiece. If the render is correct, OnePlus 6 will have very thin side bezels and a reasonably thin bottom bezel.
Earlier rumors suggested a rear-mounted fingerprint reader and you can expect Qualcomm's Snapdragon 845 SoC with 8GB of RAM, 6.28-inch FHD screen, 16- + 20-megapixel rear dual-camera setup and a 3,450mAh battery.
Unfortunately, OnePlus has yet to send out invites for the official announcement and we only know that it is coming sometime in Q2.