SQL Server 2008 has been released a few days ago; you can download it from http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=66ab3dbb-bf3e-4f46-9559-ccc6a4f9dc19 . Please read the release notes ( http://go.microsoft.com/fwlink/?LinkId=147331 ). this is the list of SP1 fixes ( http://support.microsoft.com/kb/968369/ ). Aditionally, you should pay attention that some fixes included in SQL Server 2008 CU4, are not included in SP1, ( http://blogs.msdn.com:80/psssql/archive/2009