The new companion...

Is Karen Gillan, as of twelve minutes ago. She was one of the soothsayers in "The Fires of Pompeii", but other than that, her resume is about as long as Matt Smith's. (Or Freema's, or Billie's before they joined DW.)

I am totally cheap, and without knowing anything about the actress or the companion she'll play, I like her purely because she has red hair.