Question: Is their any confirmative information regarding Cynthia Watros' much-anticipated return to Lost in Season 4?

Answer: Can't confirm that Watros is returning, but I can say that Libby's story will definitely be revisited this season. Backing up what he and Damon Lindelof teased at Comic-Con last week, Carlton Cuse tells me, "There is a cool part of [Libby's] story that we have yet to tell."