So my thoughts on GT Sport.
1. After GT6 I said I was done with the GT franchise. I'm a little older than when I started to frequent this forum and I play a lot less games. But after seeing GT Sport I have to say I may head back in. This time around however I'm going to hold off on a pre order and wait for a GOTY type edition with all the DLC or something to this effect.
2. So some people don't like the way GT Sport looks. While they still have some polishing to do, I think this could be a pretty game. It's clearly the GT6 game engine tweaked and shaped to run at optimal FPS on PS4. My gut instinct is, Sony needed some killer apps for PSVR and what better type of game but racing. As PD are in-house it seemed appropriate the next GT game would be compatible.
PD probably couldn't do a new game engine in time so why not use a tried and tested one which when pushed on more powerful hardware could run at decent FPS and resolution which are needed for a puke free VR experience. This is why GT7 isn't here, Sony/PD have been concerned with getting it prime time for PSVR launch.
3. This leads me to a little more speculation on my part. While GT Sport looked great I still noticed some AA issues (I know it's still in development don't shoot me) but I'm wondering if this game will be 4K on the new rumoured PS4K. We already know PD love pushing resolutions and they have experience with testing GT games at 4K so they know exactly what is needed for this type of resolution. If so it's possible the FPS could be dropped from 60FPS to 30FPS to squeeze the extra pixels in. This could also be why some fine AA is missing in GT Sport at 1080p, once at the higher resolution this wouldn't be an issue and no need then to spend extra resources.
All of the above is speculation to the highest degree in my part and I have no insider knowledge at all, to be truthful don't listen to me and pass on by, I'm the equivalent of the homeless guy screaming about the end of the world, just roll your eyes and give a derisive snort on your way past.