AppleInsider characterized the iPhone OS’ current approach to multi-tasking as a security measure that prevents apps from running in the background without the user’s knowledge, thus keeping malware from infecting the device. Jailbroken iPhones, however, can run multiple apps simultaneously, proving that such functionality is already possible.
The big question, beyond the aforementioned issues, is how Apple will handle multi-tasking within the user interface. AppleInsider had no insight or suggestions in that area.