Microsoft released the 3rd SP for SQL Server yesterday. You can download it from http://www.microsoft.com/downloads/details.aspx?FamilyID=ae7387c3-348c-4faa-8ae5-949fdfbe59c4&displaylang=en

For a list of new features and improvements that are included in SQL Server 2005 SP3, review the “What's New” document from http://msdn.microsoft.com/en-us/library/dd353312(SQL.90).aspx

For a list of the cumulative updates that are included in SQL Server 2005 SP3, see Microsoft Knowledge Base article 955706 at http://support.microsoft.com/?kbid=955706