I found these pictures of the Robotis booth at Robocup 2016 in Leipzig. The robot is standing next to the OP2 without a label so I am guessing that it is a prototype of the OP3? It looks like it is using the new Dynamixel X Series of servos. (LINK) The head is a major redesign. More than one camera or maybe a Intel RealSense camera? I will post more information as soon as I get it!
Link to original post with the pictures.