Didn't Apple announce delta updates for apps in iOS awhile ago? I have yet to see one true Delta update, apps are still fully redownloading themselves during updates. I mean c'mon, downloading a 1GB+ App on 3G (or even crappy wifi) isn't a solution. LTE isn't available in my area anyways and with Canadian data caps screw downloading GB's at a time. I could be wrong, but I'm not sure.