My "is it new?" test works this way: how would I explain what's new to my father (who is 74 years old and knows not much about tech). A7, M7, iOS 7, better camera and flash: not much to say. Touch ID OK that's new, but that's not much.
Touch ID is a lot! No more password entering on iTunes. A godsend for someone who has a 26 characters passphrase like me.
(A little paranoid, though.)