On the one hand, it looks and sounds very good to me. Looking forward to the time of day and weather options. Dirt build up looks very nice.
On the other hand, I'm kind of disappointed by the the car and location count. For cars, they said 500 cars with 100 new to Forza. Whilst 100 new cars is good, it means "only" 400 returning. FM7 contained over 850 cars including DLC, so we're losing more than half of those. Hopefully (again, personal preference) we'll see a lot of those return as they get rescanned and rebuilt. Similarly, the location count of returning circuits from FM7 is also halved - from a personal point of view, I hope the majority of those are the real-life locations.
Also disappointed that there's still no release date, although note the Geoff Keighley tweet saying before the end of June, which I guess would still kinda count as Spring. I guess I'd got it in my head it might be March or April!