My SSIS whitepaper, which was available in draft form on the SSIS wiki, is live on the Microsoft web site today. For anyone who is confused by all of the whitepaper announcements lately, here is a list of titles and direct links.
This one is about SSIS:
Connectivity and SQL Server 2005 Integration Services
And these two (from last week) are about scaleout technologies and solutions. That is Service Broker, Scalable Shared Database, Peer-to-Peer Replication, Query Notifications, Distributed Partitioned Views, and Data Dependent Routing.
Planning, Implementing, and Administering Scaleout Solutions with SQL Server 2005
Internals, Troubleshooting, and Best Practices for use of Scaleout Technologies in SQL Server 2005