FOX has officially announced that it has given a series order to a US version of musical competition series X Factor , which will launch in fall of 2011. As a result, Simon Cowell will depart American Idol at the end of the upcoming season and will take over as host and executive producer of X Factor . "I’m thrilled that we have put a date on the launch of the U.S. version of The X Factor , and delighted to be continuing to work with FOX," said Cowell in a statement. "We have a fantastic relationship, a great team and are all very excited about this." The full press release from FOX can be found below. “THE X FACTOR” TO LAUNCH ON FOX IN 2011 FOX announced today that THE X FACTOR will launch in the U.S. in the fall of 2011. Simon Cowell, who created and launched THE X FACTOR in the U.K. in 2004, will serve as both executive producer and judge on the U.S. version, which will be produced by Syco Television and FremantleMedia North America. THE X FACTOR is currently