It could very well be true guys, if she's still with her development deal with Fox. Remember when the article came out
Under the rich pact, the studio will develop a half-hour comedy vehicle for Duff to star in and produce. 20th TV can cast Duff in another comedy or drama project if the one she is attached to does not go forward, but the focus of the deal is on finding a half-hour idea and tailoring it to Duff’s comedic sensibilities.
SO maybe since her show didn't pick up, maybe they decided to attach her to X Factor instead of an actual show.