Those who use Windows Service Pack Blocker Tool, Microsoft announced that "the Windows Vista SP2 and Windows Server 2008 SP2 blockers will expire on August 24th 2010. After the expiration date, Vista SP2 and Server 2008 SP2 will be offered through Windows Update on computers that had previously installed the block."
"SPBT is provided for corporate customers and IT administrators, to temporarily prevent a SP from being offered through WU. A SP block typically expires one year after a SP was released on WU. It's useful when client updating can't be easily managed through WSUS or System Center Configuration Manager (SCCM) and IT administrator needs control over which SPs are offered through WU," explains Microsoft.
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