SQL Server 2005 - SP2/SP3 and Cumulative Updates
The SP3 of SQL Server 2005, It was released last month:
And at the same time Microsoft released a new cumulative update, the Cumulative Update 1 for SQL Server 2005 SP3:
This Cumulative Update includes the fixes that were addressed with Cumulative Updates 10/11 for SQL Server 2005 SP2.
To know what's new in Service Pack 3 check here.