Apple released Seventh beta version of firmware iOS 5 last night, available for testing to the authorized devices developers.
Instead of focusing on the changes, which since last beta there is little, we would warn you regarding the specific pitfalls awaiting with seventh assembly of iOS 5. First, remember that this is NOT final or GM version, that automatically means you can not activate iDevice without UDID registration. Many owners of iPhone 3GS complain that when you upgrade the firmware iOS 5 Beta 6 or Beta 7, the phone goes into an infinite recovery mode. It is strongly recommended to refuse the firmware iPhone 3GS through OTA and use good old mode DFU.
After installing the firmware update and do not forget to seventh iTunes 10.5 beta.In general, no obvious changes or fatal problems in this build there.