I mean I'm planning on building a ultra high end computer here in a year or two, but I'm doubtful I'll have it before the game releases. But joe blow average probably won't have ray tracing for years, not until those cards come way down in price.
I really haven't see any of the side by sides, but graphics is already in that realm of where it's really hard to see some of the improvements, at least IMO anyway. I thought the consensus though was that it was just another gimmick to hype sales. Sure, yet another step forward with technology, but nothing worth breaking the bank over.
Of course, if you're going to add it in. What better game to put it in. Set in a world where people are always chasing after the next improvement...so it works I guess