Unfortunately GG like Evolution and a few others, leave polishing to the final stages of development. We know the game is basically complete, so these next few months will be spent polishing it up and making it prettier. Like I said, we've had over a decade of people doubting GG's technical capabilities, but they've never not delivered. Unless being a launch title really hinders them, or something major has come up stopping them from having time to spend polishing the visuals, it will be the same trend as always, and the game will get better looking by release. I'm confident of it.
My prediction is KZ SF will set the benchmark for next gen visuals for a good several months.