I am assuming this is now public domain, as I can't find a single betting site taking odds, it is released but under NDA?
Saw it on some site I was browsing on yesterday; although I had seen her name mentioned previously where it mentioned she was apparently asked the question, but avoided it nervously.
Anyway; The Sun claims fans are annoyed after it was apparently leaked that it will be Kris Marshall.
Either they are the two favourites, or they are just a ruse.