According to rumors, Apple has re-a software update for iOS 5 development. A new version next week should come out and the remaining battery problems to solve. Then follows yet another update that Siri needs to improve.
Initially wanted to Apple with version 5.0.1 to fix the issues that iPhone users have reported with regard to the battery life. Because many users still suffer from a rapidly deflating battery, should a new version, which may number 5.0.2 said, the problems are actually going to resolve, so would the German site Macerkopf have heard of developers who are on iOS to work. Apple itself has yet no confirmation is given of the update, that next week would appear. According to the rumors the update must make sure that the battery of the iPhone 50 hours: this includes 10 hours of intensive use, and 40 hours of standby time.
Also made the German Apple fan site information about a software update that may version 5.1 adds. This would be the first major update for iOS 5, and before the end of the year be released. The software extends the capabilities of the spraakdienst Siri off. Thus there is support for voice-guided navigation, and is the Wolfram Alpha functionality in other languages than English available. There is probably no English. A later update to make Siri more hardware can address, such as bluetooth, wi-fi and the camera. Also from this update, Apple has not confirmed.
Battery problems of the iPhone came out after Apple released the iPhone 4S released. The problems seem to be limited to iPhones with iOS 5. It is possible that location services and push notifications, the problems are partly the cause.