Apple has yet to announce a successor to its three-year-old Thunderbolt Display, despite the fact that the company is releasing a new Mac Pro by the end of the year with the ability to power up to three 4K displays at once.
A Redditor did some digging and found that a display supplier overseas with ties to Apple is currently making 4K desktop-sized panels that are designed for Thunderbolt and could very easily be put in future Apple monitors.
