Apple has released iOS 5.0.1 Beta 2 to the developers



From MacRumors:

The new version, known as build 9A404, comes as Apple is working quickly to deploy the update to address battery life issues and bring several other enhancements to devices running iOS 5. The latest build is available as an over-the-air update for those with the first beta of iOS 5.0.1 installed on their devices.

  Apple Seeds iOS 5.0.1 Beta 2 to Developers