Mac Rumors reports that Apple has released iOS 4, the company's next-generation operating system for the iPhone and iPod touch.

As expected, Apple today released iOS 4, the company's next-generation operating system for the iPhone and iPod touch. A number of readers are reporting that the update has just gone live, although availability appears to still be rolling out across all users. Those looking for the update can connect their devices to iTunes and click the "Checking for Update" button.

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