What do you mean by that? Do you think there'll be enhanced effects/textures/whatever if you play on a 1080p tv and then on a 4K tv the power will be used to increase the resolution instead? Nah, I really doubt that would happen. 1080p version would be superior for most people. If the dev goes for >1080p, it'll be on every kind of tv and if it's just a 1080p tv that'll be used for downsampling. They won't differentiate the versions depending on the used tv.
I'm just reading from the feedback they were presenting in that leaked presentation.
Some developers have two modes of NEO support
(high-res renderpath for 4KTV, separate 1080p renderpath for HDTV)
'Some developers would like to have one mode of Neo support rather than two'
(high-res buffer for 4KTV, just downsample to 1080p when connected to HDTV)
"Many games will have additional improvements for HDTV (1080p) owners. Higher framerate, More stable framerate, Improved graphics fidelity, Additional graphics features. Etc."
I read that as, some devs are just going with a single high-res approach for both (one mode), some are doing high res for 4K TVs and different stuff for 1080p (two modes).
It's not hard to imagine 4KTV owners being able to switch between the two in the latter case and going with whichever they prefer.