TMZ is your newsgiver here, but with Demi Lovato rumors floating around almost as long as the Britney Spears ones, we might as well pass this along: The 19-year-old popstress is (most likely, probably, maybe) going to fill one of those mysterious judge’s seats for The X Factor’s next go-round. Spears should be there, too, and it might all be official by Monday morning.