Gary Barlow, Louis Walsh, Nicole Scherzinger and Tulisa Contostavlos are the new-look judging lineup who will be searching for the next great musical star in the show's ninth series.
Copyright: ITV Thames/SycoGeri Halliwell, Mel B, Leona Lewis, Rita Ora and Anastacia acted as guest judges during the auditions, before Scherzinger landed the job full-time.
It was revealed yesterday that this year's X Factor final will be held at Manchester Central.
Dermot O'Leary returns as the host, while Caroline Flack and Olly Murs will front spinoff show Xtra Factor on ITV2.
"We're back and we are going to be better than ever. We're the country's number one singing show and we want to keep it that way!" said O'Leary.
Simon Cowell has changed the rules for this year's series, allowing acts with deals and management to enter the competition for the first time.
The X Factor returns at 8pm on Saturday (August 18) on ITV1.
Watch the 'Whose Time Is Now?' X Factor trailer: