A team from SolidQ has been working with the SQL product team members and reviewers to produce a series of enterprise data warehouse guidance documents. They cover the following topics:
Chapter 1 - Overview
Chapter 2 - Data Architecture
Chapter 3 - Integration Architecture
Chapter 4 - Database Administration
Chapter 5 - Performance, Monitoring and Tuning
You'll find them here: http://msdn.microsoft.com/en-us/library/hh147624.aspx
It's great to see these documents now published. Enjoy!