Two new SSIS connectivity white papers have been published on MSDN.
http://msdn.microsoft.com/en-us/library/dd299429.aspx by Martin Ellis
This paper talks about the various connectivity options that SSIS supports, as well as the new connectors for Oracle, Teradata and SAP BI that were http://dougbert.com/blogs/dougbert/archive/2008/10/21/connectors-now-available-for-sap-bi-oracle-and-teradata.aspx . I was also happy to see that it contains sections on how to connect to SAP R/3, Siebel eBusiness Applications, and DB2.
http://msdn.microsoft.com/en-us/library/dd299430.aspx by Chunhui Zhu
This white paper is a walkthrough on how to use the new SAP BI connectors. It covers the two core scenarios of extracting data from SAP BI into SQL Server, and how to load non-SAP data into SAP BI.