I dont know man, based on a few links I looked around, it seems like the 4K resolution support and the 1080p 60 fps (better optimized) modes will be available in a patch that comes in december...
Way I understand it, upon game's release on 29 Nov. the game will have the modes that are included now in Judgement Demo which you perfectly described.
True 4K and further optimized 60 fps mode will come in December...
which sucks... :/
Please make me eat crow about this... cause it looks like I will have to wait extra time for the true experience...
There is no true 4K support coming. This game will never be native res.