Windows Vista Service Pack 2 has been released to the general public. These downloads contain both Vista SP2 and Server 2008 SP2.
These should appear via Windows Update today.
*edit 14:26 (EST) – It is on Windows Update now. I’m downloading it and installing on my last Vista machine (all others that had Vista are on Windows 7 now). My download (x64) is 567.3 MB.
“Service Pack 1 is a prerequisite for installing Service Pack 2.”
Downloads:
Windows Vista SP2 (x86)
Windows Vista SP2 (x64)
Windows Vista SP2 Five Language Standalone DVD ISO
Notable Changes in Windows Server 2008 SP2 and Windows Vista SP2