The Windows Phone UI is the one thing in my mind that actually is different, though I have a little skepticism about it as I'm not convinced that it's solving a problem many people actually have (certainly not one I or most people I know have) and it doesn't seem to be something consumers are queuing up to get their hands on. Meaningful innovation surely has to be something for which there is a demand?

Kids corner I would love on my iPhone but it's a more polished version of what I can do with restrictions so I'm not really sold on it being that revolutionary.