A-Answer in Japan today released the official, certified Premium HDMI Cable for the new PlayStation 4 Pro systems. The cable by the way compatible with any other devices which can use HDMI connection like the PlayStation 3, Wii U, PC. You can use the cable on 4K TVs too of course.
If you want, you can find more details about the cable on the official product page: http://a-answerstore.com/?pid=109600794
The price is 1980 Yen + tax.