To those waiting with bated breath for Apple's iOS 5 upgrade, here's some good news: Apple is planning to reset all iCloud backup data on Sept. 22, 2011. Here's the official announcement from Apple:

On Thursday, September 22, the iCloud Backup data will be reset. Backing up to iCloud or restoring from an iCloud backup will be unavailable from 9 a.m. PDT to 5 p.m. PDT. If you attempt a backup or restore during this time, you will receive an alert that the backup or restore was not successful. After this reset, you will be unable to restore from any backup created prior to September 22. A full backup will happen automatically the next time your device backs up to iCloud.

iCloud, of course, is Apple's new cloud system that wirelessly syncs all information, including music, photos, documents, apps, and calendars, across your Apple devices automatically. iCloud will come free with iOS 5.

Developers have been able to test iCloud since they've had access to the beta 2 build of iOS 5 back in June, but the company must wipe and reset all data before debuting the platform to the public. Apple will reportedly release the eighth beta version of iOS 5, the Golden Master, or the final version before the release, to developers this Friday, Sept. 23.

Barring any last-minute hiccups or changes, Apple's carrier partners for iPhone will reportedly give final approval to iOS 5 by Oct. 5. Others have pegged the date at Oct. 10, as a source close to Apple says AppleCare call centers are prepping for an unusually high amount of incoming tech support calls, about an eightfold increase, starting that day.

Apple originally said it would launch iOS 5 and iCloud sometime this fall, but the company has not provided any more information about the release dates of its new iPhone(s).

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