The Cumulative Update package 9 for SQL Server 2005 Service Pack 2 (Build 09.00.3257.00) is now available:

http://support.microsoft.com/kb/953752/en-us

And here you can get the whole information of builds that were released after SQL Server 2005 Service Pack 2:

http://support.microsoft.com/kb/937137/en-us

CU tosc