Microsoft Office Communications Server 2007 R2 Resource Kit Book

Yesterday, Microsoft Press announced the new Microsoft Office Communications Server 2007 R2 Resource Kit book, available by February 4. This book holds much of the information about the new OCS 2007 R2 release which comes with the Response Group Service. IIRC, there's also a huge amount of information if not an entire chapter about RGS to which many people from the product development teams have contributed.