New Judges for U.S X Factor

U.S version of British "X Factor" is going to start in 2011. Simon Cowell is seeking judges for it. X Factor is a prime time entertainment competition show that will be broadcast on "FOX".
Its been said that he will take Paula Abdul as judge who was costar at "American Idol" with Simon Cowell. Also its been rumored that Cowell is looking forward for Cheryl Cole who is the judge with Simon Cowell at British "X Factor".
Paula left American Idol in August for some contract clashes or whatever that was. The judges of X Factor play more noticeable and active part in the show and also in the development of the participants.