Microsoft Press has published FREE eBook on the most awaiting release of SQL Server 2008 R2. The book is written by Ross Mistry (@rossmistry) and Stacia Misner. Ross is my personal friend and one of the most active book writer in SQL Server Domain. When I see his name on any book, I am sure that it will be high quality and easy to read book.
Ross has written many other books, which I am big fan of as well.
The details about the book is here:
Introducing Microsoft SQL Server 2008 R2, by Ross Mistry and Stacia Misner
The book contains 10 chapters and 216 pages.
PART I Database Administration
CHAPTER 1 SQL Server 2008 R2 Editions and Enhancements
CHAPTER 2 Multi-Server Administration
CHAPTER 3 Data-Tier Applications
CHAPTER 4 High Availability and Virtualization Enhancements
CHAPTER 5 Consolidation and Monitoring
PART II Business Intelligence Development
CHAPTER 6 Scalable Data Warehousing
CHAPTER 7 Master Data Services
CHAPTER 8 Complex Event Processing with StreamInsight
CHAPTER 9 Reporting Services Enhancements
CHAPTER 10 Self-Service Analysis with PowerPivot
More detail about the book is listed here.
Reference: Pinal Dave (http://blog.SQLAuthority.com)