We knew the pre-release builds for iOS 5 would be issued to the developer community today, but AppleInsider warns that this comes with a caveat. Apple has apparently told testers of iOS 5 that any devices updated to that beta cannot be downgraded back to iOS 4. They will only be able to further upgrade their device and eventually install the final iOS 5 release.
This note was delivered to developers alongside the latest builds of iOS 5 (build 9A5220p), iTunes 10.5, Apple TV Software beta and the Xcode 4.2 Preview (build 4C104 for Snow Leopard
