On Vimeo you can find those pictures of a FS5II. It really looks like the original FS5 with some minor cosmetic color changes and the FS5II logo on it. I am not sure these images are from the real camera!
Anyway, we will soon know the answer: The camera will be announced soon at 3pm Las Vegas time. Stay tuned on SonyAlphaRumors.com to see the video live stream!