The August CTP download is available for MSDN and TechNet subscribers. The public download is now also active here.
The Data Platform Insider blog provides an overview of what's new in this first public CTP release for SQL Server 2008 R2. If you are reading my blog, you are probably interested in knowing what’s new in Reporting Services 2008 R2, and already in August CTP:
On top of that, there are several more new Reporting Services and RDL features available in August CTP, including a few in combination with Gemini and SharePoint in a limited CTP program only. During the next weeks and months I plan to cover more details on the major areas listed above, and perhaps some of the other additions like report sections.
I look forward to hearing your feedback on Reporting Services 2008 R2 August CTP in the dedicated new MSDN discussion forum.