I remember before ios5 you always had to plug your phone in for software updates. Is that still the case? Or can you do it without plugging it into iTunes now?
You don't have to be connected to power to do the ota updates. At least last time I did it you didn't have. I updated to 5.1 from jailbroken 5.0.1 so I had to use iTunes.
This is correct and not correct. You have to have your battery charged more than 50% to be able to update while not being plugged into a power source.
OTA installs can install 'wonky' for a looser term and then at some point may need a clean restore thru iTunes anyway. if it was me doing the install, i'm all for usb'ing to itunes but thats just MPO.