The music mogul, who recently hinted at scaling back his role on the programme, said that he will rejoin the show for the semi-finals.
He told Reveal: "I won't be doing the Britain's Got Talent auditions next year. I will join the show at the semi-final stage.
"I will eventually leave but nothing is decided yet. We launch X Factor [in the US] next year too, which is a huge challenge."
> Simon Cowell quits 'American Idol'