Let the hive mind of Engadget get that for you.
"I'm in the market for a new phone and money isn't a limitation. I'm also not partial to any particular US carrier, but here are some of the features I'd like to have: WiFi, GPS, good coverage in lots of places, push Gmail (a must!), physical keyboard (a must!), a touchscreen, decent battery life and a relatively slim body. And please, nothing that has a fruit logo on it. No offense to the fruit fans, though. Thanks!"
Someone commented on another blog that you could overcome the limitation of running in the background by "overriding the applicationSuspend."
Like Chris mentions below, is this really something we can expect Apple to let slip through?
The develop agreement says:
Applications must comply with the Human Interface Guidelines and other Documentation provided by Apple.
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Circumvent the multitasking ban and then Apple does not release your app. Its not a free for all out there. You follow Apple's rules or you dont get to play.