Apple today released a second beta version of its iOS 5 system software for the iPhone, iPad, and iPod Touch. This updated software has activated wireless Wi-Fi syncing between iOS devices and Apple computers, as well as added the option to backup new iOS devices to iCloud when first setting them up. Apple has made a new version of iTunes available, as well. Apply typically provides updated betas for its iOS software every few weeks leading up to the final release. iOS 5 isn't scheduled to become available to everyone until the fall.
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