Forza 4 never had them in the first place, and already psoted.
Read the article, Turn 10 said they were planning on having more in Forza 4 then Forza 3.
"I always wonder why this is a big deal when RUF (modified Porsches) are still available. I remember when this was the case with GT3. Interesting to see EA getting ultra-competitive about other things besides the BF3/MW3 drama though."
Porsche and RUF are two completly different companies. RUF tunes Porsche so that they get 600HP or more out of their cars, and they cost $500,000. Porsche, are freaken Porsche, the best car company in the world.
To OP. DAMMIT! I was really hoping to try out the new GT-S. Porsche is my favorite car company, this ommission makes me not want to get Forza 4 anymore. Without Porsche why race? They make the best cars for that price range and are just fun as hell.