Windows Service Pack Road Map

Operating System Preceding Service Pack Current Service Pack and Date of Availability Next Update and Estimated Date of Availability
Windows NT Workstation & Windows NT Server 4.xx SP5 SP6a and SP6a SRP1
November 30, 1999 Windows NT 4.XX is now out of support and Microsoft is no longer producing public monthly security updates or service packs.2
Windows 2000 Professional & Windows 2000 Server, Advanced Server and Datacenter Server3 SP3 SP4
June 26th 2003

Update Rollup #1 for SP4
June 28, 2005 No further updates planned. Customers must be running SP4 to continue to receive monthly security updates.

Microsoft recommends updating SP4 machines to Update Rollup #1 (KB891861).
Windows XP Home Edition SP2 SP3
May 6, 2008 No further updates planned
Windows XP Professional SP2 SP3
May 6, 2008 No further updates planned
Windows Server 2003 SP1 SP2
March 13, 2007 No further updates planned
Windows Vista SP1
April 18, 2008 SP2
May 26, 2009 To be determined
Windows Server 2008 SP1 (Windows Server 2008 was released including Service Pack 1.) SP2 (May 26, 2009) To be determined

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