Over the weekend, Apple released iOS 5 beta 5 to developers. No major new features were rolled in this beta release, with Apple opting to fix bugs and make under the hood performance improvements.
iOS 5 b5 is once again available as an OTA (over-the-air) update but you can also complete the update by connecting to a Mac/PC. To complete your OTA update to iOS 5 b5 go to Settings > General > Software Update.
If your battery is below 50%, you will need to connect to a power source to complete the update.
iTunes 10.5 beta 5 is required if you wish to update to iOS 5 b5 the traditional way. Login to the developer center to pick up the necessary files.
Apple is releasing betas of iOS 5 approximately every two weeks. However, the next update is expected for Wednesday, August 17.