Alleged iPhone 5S leaked images
I hear ya and wanting a UI change of some sort is understandable. Anyway, we'll see soon enough...
just like the 4 and 4s i dont think you would see a difference in hardware.
I am friends with a fair amount of tech bloggers and also just some apple crazed friends. general consensus is if there isn't a fairly large change in the UI they may look elsewhere for their next device. with the new win8,bb10 and whatever android will be baking up there is an ever changing tech world out there and people that have had an iphone since the 1st one want a little bit of a change.
I hear ya and wanting a UI change of some sort is understandable. Anyway, we'll see soon enough...