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Apple has been promising some sort of wireless PC-free syncing solution for quite some time, but the company has now officially confirmed that the new feature will be introduced with iOS 5.
In iOS 5, the iPhone, iPad or iPod touch will automatically find iTunes on a Wi-Fi network and automatically sync and backup apps, contacts and media. This is similar to what Google does with its Android OS, with the exception, of course, that Apple still has an actual program that users can use to monitor backups and programs.
Apple also announced that users who want to be completely PC free can perform cloud backups to the new iCloud service.