teigaga on 17 May 2015
I don't think 4k is important personally, especially considering that for the moment most people TV's are no bigger then 50", let alone 4k.
In terms of CG graphics I feel confident we will see it next gen. Epic teased it in their real time 30fps, 1080p tech demo running on the Titan X. It will be available to all UE4 devs by next month so I don't think theres much marketing trickery going on here, they also have a video on twitch of them moving through the enviornments and dynamically changing the lighting
https://youtu.be/w6EMc6eu3c8
