According to a statement published on the Apple Developer boards, all the data backed up by iOS 5 beta testers on iCloud servers will be reset (i.e Deleted) on Thursday, September 22nd. This iCloud backup data reset indicates that iOS 5 GM will be released very soon.
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 AM PDT – 5 PM 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.
iOS 5 GM (Gold Master) will be the last release before iOS 5 final public release (rumored in early October). Please note that this iCloud reset doesn’t include data from mail, contacts, calendars, reminders, or bookmarks. If you’re currently running iOS 5 beta and have been backing up your data to the iCloud, it’s highly recommended to connect your iDevice to a computer and backup your data using iTunes.
iOS 5 loaded in two new iPhones (low end-iPhone 4S and iPhone 5) is rumored to be announced in late September and public availability in early weeks of october. iOS 5 brings 200+ new features. Checkout: iOS 5 Features.
We’ll update you as soon as iOS 5 GM becomes available.