To be honest, I don't mind if FF XV will be delayed.
Yes, on the one hand people hate the wait even more and after Uncovered million of people saw the release date, so it's kind of bad to delay the game,
but on the other hand the game can be polished even more and can look like those PC screens/videos (yeah only those who looked good like the SIGGRAPH gameplay), because we actually don't know how the console version looks currently (besides the Titan demo and PAX driving).
Also we can instandly get the PS4 NEO version (releasing in autum/winter?).
But either way, we have to wait until Square Enix can tell us more.
Like I said before, it doesn't matter to me if it's delayed or not. The only thing I want is that FF XV will have a good story, gameplay and funny.
Graphics plays a minor thing.