SO I'm up and running with the iPhone 4.0 pre-release. I plan on developing a few personal productivity applications for DMDi on my iPhone 3G 4.0. Will let you in on my development experience and novel functionality as I come across it, contract permitting.So far my impressions of the 4.0 upgrade on 3G phones is underwhelming. So far all the additional application functions could have been rolled out in a iPhone 3 update. But I do understand that when Apple changes any core applications it intends it for a major new release, so as not to muddy the user experience. Mail for example is a lot nicer now that I can see a unified inbox; or having application folders also helps with organization of apps and is much appreciated. My only dissappointment still remins the inability to change backup images or multitask on 3G models.
I ultimately think apple with allow limited multitasking on the 3G phones, even if it's just two applications with a memory warning, but it will happen. If not, you will be seeing a lot more jail-broken phones, multitasking patches or people switching over to jail-break. The economics is simple, at this point I'm not spending $699 for a new iPhone outside my contract or waiting 1.5 years for the possibility of listening to internet radio and reading email at the same time on a 3Gs. Those were core functions that should have been integrate since 3.0.
