http://forums.overclockers.co.uk/showpost.php?p=28199976&postcount=706
Just to confirm.
The AMD Radeon Fury X is an enthusiast graphics card designed to provide multi-display 4K gaming at 60Hz.
In addition, Active DisplayPort 1.2a-to-HDMI 2.0 adapters are set to debut this summer. These adapters will enable any graphics cards with DP1.2a outputs to deliver 4K@60Hz gaming on UHD televisions that support HDMI 2.0.