The Apple iPhone Developer web site is now back up with SDK and iPhoneOS beta 7 available for download. The SDK is version 9M2199 and the OS is version 5A331. The OS weighs in at 209MB and the SDK is a mere 1.24GB

The readme states that Beta release 7 fixes bugs and adds support for the latest iPhone OS.

There is a warning on the download page stating that device provisioning profiles will need to be re-generated for this version.