The Visual Studio 2008 SDK 1.1 just released!
I have the honor of posting the bits online, sending the woo hoo message and emailing as many people as I can :)
I've posted more information on our team blog here, along with links to the SDK and Service Pack 1.
Additionally, the readme for the 1.1 SDK is on my blog (since I'll be the one updating it if issues come up).
Try out our 1.1 SDK but don't forget to install Visual Studio Service Pack 1 first. :)