On September 27th Microsoft released Windows Sharepoint Services service pack 2.0.
You can download it from the following link:
Windows SharePoint Services Service Pack 2 (SP2): "
Windows SharePoint Services Service Pack 2 (SP2) contains stability and performance improvements. Some of the fixes included with SP2 have been previously released as separate updates. This service pack combines them into one update.(source MSDN)
Along with other noteworthy updates and fixes WSS SP 2.0 now supports SQL Server 2005 and ASP.NET 2.0 as well.
For more detailed information please visit Microsoft Support sites KB article here