a bit annoying that they couldn't package LTE for all the bands in there - I'd like a phone that can do what it does in the USA as well as it does back home in Australia.
I'm not crazy on the screen size change, I liked that everything was the same aspect ratio. I would've happily taken all the other goodies and had them stuffed into the casing for a 4, even if it was slightly fatter (though the length change isn't all that much). Battery life increase is a plus.
If I do upgrade while it is still the 5 and not 5s, I'll be waiting for the untethered jailbreak. I'm quite happy with the 4 on iOS 4.3.3 (a few tweaks I like don't work on iOS 5)