This is a discussion thread for the "App Updates Are Much Quicker in iOS 6 Beta" story posted on the front page.
Delta updates would be a welcome addition. It seems silly to download the ENTIRE application for a minor update. To do a full install, the person would only have to delete the app before downloading.
To test whether or not Apple is doing delta updates or not use the usage calculator to check the data sizes.
Did I have a magical copy of iOS 6 beta 1? The updates have always been hardcore fast for me in beta one... this plus the ability to download free apps without entering a password have both been available in beta 1, for me at least.
Test this on 10 iPhone 4S's on iOS 6 and 10 iPhone 4S's on iOS 5, and the results will be more equal. It really depends on the individual device.