Today Apple seeded the new Beta for iCloud for MAC and a new MAC OS X 10.7.2 for MAC Developers.
The new build for iCloud is Beta 7 while the new build of the OS X is 11c37. As the final launch is coming near of iCloud, Apple is pushing out updates. With this iCloud update users can make their MAC iCloud compatible and it includes Back to my MAC service, Documents and Data in the Cloud, and Find my Mac. You download All these things from you developers Account.
iCloud Beta 7 (Direct Download)
MAC OS X 10.7.2(11c37) (Direct Download)