According to Kristin Dos Santos, the CW's new pilot Secret Circle, based on the book series authored by The Vampire Diaries scribe L.J. Smith, is expected to help fill the Life Unexpected void midseason. There are also some rumors of other pilots in development for the network.
"The Secret Circle" is a series of books about witches. A 16 year old girl named Cassie moves, with her mother, to New Salem, Massachusetts. Her new highschool is ruled by a group of girls known as 'The Club'. The girls in The Club are witches, descended from the original Salem witches, and Cassie is a witch herself.
Elizabeth Craft and Sarah Fain, are writers and producers who were also involved with creating The Vampire Diaries show (and were involved with Buffy, Angel and Dollhouse). They're now spearheading the adaptation, while screenwriter Andrew Miller is writing the pilot episode.
As mentioned, The CW has decided not to go forward with a “back nine” order for Life Unexpected, making the 13th episode of Season Two the likely season (and series) finale. The network won’t decide on a Season 3 until May 2011.