Apple has released a new seed of Mac OS 10.7.2 and a new beta of iCloud for Mac, both required to complete the transition of MobileMe to iCloud.
This pre-release version of OS X Lion 10.7.2 is being provided solely for testing iCloud and updates the public release of OS X Lion and any earlier seed of OS X Lion 10.7.2. If you installed a previous seed of OS X Lion 10.7.2, please run the included reversioner package followed by the OS X Lion 10.7.2 update without restarting your system. You should restart your system after installing the OS X Lion 10.7.2 Update. (Mac Developer Program membership is required).
There is also a new seed of iCloud Control Panel for Windows. No word on the changes there.