I'm talking about next Gen console games that will face a certain level of expectations to how graphics should be, not a grid based dungeon crawler with current Gen graphics on your PC =P. I'm already aware that PC games are coming close or hitting 4K resolutions. Meanwhile the vast vast majority of home consoles will be played on tvs with a max resolution of 1080p, making it hard to justify 4K development.
Besides, this and last gen has proven that time per pixel > number of pixels and I don't see that changing next Gen.
I do agree with you that if they could support 4K, they will. However just like 1080p this gen, native 4K resolution will mean almost nothing next gen when it comes to games.