To coincide with the SP1 release..the SQL Server 2005 Books Online April 2006 update is available here: http://www.microsoft.com/downloads/details.aspx?amp;amp;displaylang=en&familyid=be6a2c5d-00df-4220-b133-29c1e0b6585f&displaylang=en

There are loads of new and updated topics, especially for SSIS.