One person familiar with the matter said his local AppleCare call center has been told to expect an eightfold increase in customer calls on that day, and that staff are being advised ahead of time for the increased traffic.
The person could not say with any certainty what will be released on that Monday, but noted that the increase in call volume is related to iOS. This led them to speculate that Apple could release iOS 5 and iCloud on Oct. 10.
AppleInsider was unable to verify the accuracy of this information but was provided with specific details on call volumes suggesting that the information may be accurate.
Earlier today a report said that carriers are being asked to verify iOS 5 by October 5th.