Apple to share a peek at iPhone OS 4 on Thursday

The most highly anticipated new feature expected to be in the OS is multitasking. Apple has eschewed the ability to run third-party apps in the background until now, using a battery life impact argument.
It's unclear how Apple will address that issue, as the most obvious band-aid, a user-replaceable battery, would see to be off the table as a solution. Other mobile OSes, such as Android and Palm's webOS, have provided background processing from the beginning. Current versions of Windows Mobile do as well, but Microsoft has stated that Windows Phone 7 will not.
For certain functions, Apple has delayed release until it developed what it felt was the optimal solution. In 2009, Apple released iPhone OS 3.0, which finally added cut, copy and paste as well as MMS support.
The iPhone currently runs iPhone OS 3.1.3. The iPad, just released, runs iPhone OS 3.2, a version not applicable to the iPhone.





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