Ferrari, McLaren, Renault, Toyota, BMW Sauber, Red Bull Racing and Toro Rosso will leave F1 to form a breakaway series in 2010. Leaving only Williams, Force India, and new teams Campos Racing, Team US F1 and Manor F1 Team to compete in F1.

http://sports.espn.go.com/rpm/racing/f1/news/story?id=4270761