I think the same is true for Microsoft but their situation is fundamentally different. Dynamics have never been a part of the Forza Motorsport experience so this year presents an amazing opportunity for it to appear across both platforms but Scorpio's being the most effective of the two.
I imagine Phil Spencer to be just the guy to say "if GT Sport is turning away from dynamic ToD and weather, we will put our finger right into that wound this year. Make it happen, I don't care how!"
So yea, I absolutely expect Forza Motorsport to have that stuff dynamic, even if only on Scorpio and with not as impressive lighting tech as GT Sport.
Nice screens. Could you maybe set the screenshots to 1080p instead of 4k, this would help the picture quality. The game clearly isn't native 4k. Could you also upload some gamplay screens to https://cubeupload.com/ flickr might still be compressing those images. Thanks