"Jennifer L. Armentrout's DON'T LOOK BACK, pitched as Black Swan meets Pretty Little Liars, featuring a teen girl who had it all until the night she and her friend go missing, and she loses all recollection of who she is, but must piece together a life she no longer wants and the events that led to her friend's disappearance, to Emily Meehan at Disney-Hyperion, in a pre-empt, in a two-book deal, by Kevan Lyon at Marsal Lyon Literary Agency.
"Anna Collomore's THE UNRAVELING, about a girl who becomes a nanny for a seemingly perfect family and slowly loses her grip on reality; pitched as The Nanny Diaries meets Black Swan, to Caroline Donofrio at Razorbill, for publication in Spring 2013, by Josh Adams at Adams Literary."
I haven't seen Black Swan, but the second book seems a better fit for what I've heard about the movie. However, the first book intrigues me more.
It seems like a lot of the one-line descriptions of books I see in Publishers Lunch are described as some combination of books and movies. More often movies. I don't know if it's sad or not that movies are considered a better touchstone even when you are talking about books. I guess that even if you haven't seen a given movie, you probably have seen the trailer.