Sadly no MSMQ 5.0 content but may still be of interest:
 

Download the Free MS Press eBook: 

Introducing Windows Server 2008 R2 

Blurb: "Introducing Windows Server 2008 R2, by Charlie Russel and Craig Zacker, is a great resource for learning about the new features of Windows Server 2008 R2 in the areas of virtualization, management, the Web application platform, scalability and reliability, and interoperability with Windows 7."

Download your free copy from Microsoft.com.

 

 

Oh, there's also a Haiku competition to help promote Windows Server 2008 R2 but unfortunately it's only open to residents of the United States.