I've been playing Forza since the Xbox days and never liked the overly saturated look which persisted in 2 and 3 (and looks like 4 too, though I never got it).
It was grating that GT4 on PS2 had more realistic looking vehicles, despite Xbox being more powerful - it's like if Killzone 1 looked better than Halo!).
It's a driving sim for god's sake, no point having realistic handling if the graphics are toony.
But you're right we shall see whether gameplay looks like that.
But gameplay rendering too? Or replay mode with better lighting, shaders and effects?
I'm guessing the latter.
No it's a real thing, even DF mention it in their analyses
http://www.eurogamer.net/articles/digitalfoundry-forza3-evolution-article?page=3
http://www.eurogamer.net/articles/digitalfoundry-tech-analysis-forza-motorsport-4?page=2
Forza 1 and Forza 2 exhibited it best with their lighting and artstyle improving since F3.
The shot from F3 illustrates what I mean:
I see what you did
if you think that this look toony you must be blind at all, anyway please avoid talking about other games and keep this thread clean on Forza5, if you want to talk about GT, there's a thread for it