Expansion passes are not included in the car pass. That's always been the case and it is clearly stated that the car pass only included DLC car packs. Additionally, bringing Porsche to the game was an expensive and difficult proposition due to Porsche exclusive license deal with EA. Most other racing games never bothered to get them in at all, but "scumbag" Turn 10 managed to. I was thankful for having this option in the game. Much better than no option at all.
The presence of Porsche now is not "good will". The exclusive license deal has expired and now Porsche is like any other manufacturer.
When you tell people prior to release that your game will have Porsche and then for Porsche to not appear until six months later as paid DLC which was not included in the 'gets you everything' Ultimate Edition...AND...REMOVING RUF FROM THE SERIES, its a little slimy.
And RUF wasn't just an attainable alternative, it was the made better and cooler versions of Porsche, pretty much the embodiment of Forza itself. I can't imagine how anyone in their right mind would rather drive the Porsche version over its RUF counterpart. I will still boot up FM5 just to take the Yellow Bird out on the Ring to relive that iconic run.
Turn 10 going out of their way to get the Porsche name wasn't really necessary with RUF around to give us that rear engine fix and for sure someone must have realised that by the time they decided to omit RUF.
They also pulled similar crap with the Ford Focus RS as well. Used the RS to promote FM6 pre-release only to release the RS post carpass expirarion.
So now I guess at every turn we should really be asking what all that they have they told us about Forza 7 that won't really be in the game come launch day.