There were going to be 35 Porsches in Forza Motorsport 4, but now there will be precisely zero. Kind of. In the video game world, some developers own the rights to a brand, and Electronic Arts owns the rights to have Porsche appear in any other game. When the Stuttgart brand appears in a non-EA game, it's because the other developer paid EA a licensing fee. That's what Turn 10 did with the previous Forza games and expected to do with FM4.
EA has other ideas, informing Turn 10 that it won't allow the rival developer to license any Porsches.
Autoblog, Forza Motorsport 4 wants to include Porsche models, EA says 'Nein!'