The game looks slightly blurrier on Xbox One. Not much else worth mentioning really..

Did they dumb it down for noons? The previous Witcher was too complicated for me.

I honestly can't see any difference in IQ. Neither runs at 60fps though so it's a fail for both.

I heard and read the opposite, in gaf guys are talking about the frame rate, both consoles reached numbers higher than 30fps, but the X1 seems to be more unstable than PS4, framepacing on Ps4 looks better overall ...

anyway, both versions look good and you will have lots of fun regardless, it seems that the PS4 has a resolution and performace a little better, but nothing striking = /

edit: Eurogamer futher confirms what i read on GAF: http://www.eurogamer.net/articles/digitalfoundry-2015-should-you-install-the-witcher-3-day-one-patch
PS4 performace is noticeable better compared to X1.

No. This is the patch 1.01 (the called Day 1)... now if there is another patch today is unknown.

I only noticed better res on PS4 and more shadows cast, I take what I said about the game previously though, These uncompressed vids look great