I'm still not understanding how this will have huge appeal. It's biggest benefits are with people who have 4K/HDR tvs. So that's not a whole lot of people in the grand scheme of things.
I have a 1080p TV/Monitor and still getting one. It's not just for 4K/HDR like you would be led to believe, but I suppose they are among the main reasons for making it in the first place and I think/hope devs will realise that and have options for using 1080p with extra benefits, similar to Tomb Raider.
4K and HDR I'm not fully interested in tbh at this point. Maybe eventually, but want it for way cheaper.
Having 4K images supersampled and/or 60fps and/or better textures/effects is what I want for now. Playing FFXV in the best way at launch is what mainly pushes me for wanting it sooner rather than later too.