It is expected that Apple will release future updates of iOS 5.0 via Over-the-Air for all their iOS devices. This is not new to other competitors.
Rather than full downloads, it make sense for Apple to update small sizes or patches.
Otherwise, the mobile network will certainly be congested with iOS updates traffic.
This is what has been reported to me recently by one of the local mobile telco - the traffic that congest their spectrum mainly came from Windows Updates!
What do you think? Will this be a great feature that you have been waiting for? What happen if your network is as fast as a “turtle”?