I'd be flabbergasted if Rockstar didn't release a patch for GTA:V considering the current playerbase and how active it still is, including dev support.
Well they didn't do anything for PS4 Pro.
I am very interested in this game in particular, to see if it ends up better than Pro without a patch. Reading the DF articles, it seems they are very close currently, with the biggest difference being that the Xbone lacks some of the foliage.
They also mention that parallax occlusion mapping doesn't play well with anisotropic filtering, do the forced AF could actually be a hinderence. They don't elaborate on this though, so I have no idea what the result might be.