Apple have just released iOS 5.0.1 build number 9A405, which is a minor update to its mobile operating system that is meant to fix the iPhone 4S battery problems. iOS 5.0.1 arrives a day after it found its way to certain high-end users for testing, and just a week past the developer-only version.
Battery problems aren't the only thing iOS 5.0.1 will fix, it also enables multitasking gestures on the original iPad (go to Settings, General, Multitasking Gestures), fixes the Smart Cover security flaw, resolves bugs with Documents in the Cloud and improves voice recognition for Australian users using dictation.
If you want it now, connect to iTunes and hit the "Check for Updates" button, or download an over-the-air update directly on your device. Note that the OTA update might not be available for everyone right away.