We've just released a version of the Visual Studio SDK that targets Visual Studio "Orcas" Beta 1. You can download it from http://www.vsipmembers.com/ (free registration required). Beyond targeting "Orcas", all the supported VSIntegration samples (Both C++ and C#) have been converted to use the VSCT format! James has some more detail about features and enhancements in this release.
As always, we welcome all feedback. Please let us know what you think or if you encounter any issues.