Just a quick heads up that Apple dropped iOS 5 Beta 6 for Developers, and can be downloaded in the Dev Center and is 144mb. Also iTunes 10.5 beta 6 can be downloaded from the Dev Center, which you need to update your iDevice with the 6th Beta version of iOS 5. A lot of bugs has been fixed in the agenda, iCloud and iTunes sync over Wi-Fi and Safari. The full changlog of iOS 5 Beta 6 can be found at 9to5mac.