Apple Inc. chief executive Steve Jobs unveiled the iPhone's 4.0 operating system earlier this year, due out this summer for iPhone and iPod Touch, and in the fall for the iPad.
Take a look at some of the features the upgrade will include - including long-awaited multitasking. Not all of the features will work on every model, and there are some things, like Flash, the iPhone still won't support.
Read more about the upgrade here.
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