Neowin posted a news story that Microsoft released Windows Vista and Windows Server 2008 Service Pack 2 RTM Escrow build to Connect beta testers
>> Windows Vista SP2: RTM Escrow build reaches beta testers
This build is available on Windows Update for download and install or by a number of other package options such as Slipstream versions and Standalone installers, for the Connect beta testers. The build string reads 6002.17043.090312-1835 which is different from the one we reported earlier.
>> Windows Vista SP2: RTM Escrow build reaches beta testers