One minor, weird thing that is a bit jarring: the bottom tray (with the gray background) on the home screen now has black lettering on my 5S (all else it white).
However, on a 4 that I simultaneously updated, the text stays white (btw, it's quite amazing how much faster the 5S is compared to the 4).
Anyone else have this issue?
Add: Other than that, I am loving the update. I have switched to the lady with the English accent. She seems to pronounce my name...