The ESB Toolkit 2.0 (former ESB Guidance) is finally available for download. You find it here. The BizTalk ESB Toolkit 2.0 provides architectural guidance, patterns and practices, and a collection of BizTalk Server and .NET Framework components to simplify the development of enterprise-scale solutions on the Microsoft platform. The toolkit also provides capabilities to help developers extend existing messaging and integration solutions. The BizTalk ESB Toolkit 2.0 consists of a collection of interoperating...
Here are some powerpoint presentations from sessions at TechEd 2009 and TechReady 7. TechEd 2009 - BizTalk Server Presentations TechReady 7 - BizTalk Customer Advisory Team Presentations
Finally the WM 6.5 developer toolkit is here. It includes Emulator images, Gesture API’s and samples. Its like Carlsberg - “Worth waiting for” :)