According to TV Guide, Cynthia Watros is returning to ABC's Lost. Her short-lived character Libby is not returning from the dead, though. Instead, she will be featured in more flashbacks.
Executive producer Carlton Cuse stated, "She'll be in enough of the show for us to fill in the missing pieces of her story. We could not be more pleased. Cynthia is a smart and engaging actor, and [executive producer] Damon [Lindelof] and I have some very cool parts of her story left to tell."
The date of Watros return has not been set yet.