No, its pretty known that Ford is still keeping the 4 valve heads. The way it will work from now on is...
2v - low performance (crown vics, etc.)
3v - mid performance (mustang GT, trucks)
4v - high performance (cobra, Ford GT)
2v - low performance (crown vics, etc.)
3v - mid performance (mustang GT, trucks)
4v - high performance (cobra, Ford GT)