The 3rd Visual Studio SDK release is cool for many reasons, but mostly because it's the first release of the SDK that allows developers to use Visual Studio to host any language targeting any runtime. Now you can take advantage of intellisense, syntax checking and the project system to host any type of programming system you chose to build support for.
Check it out at the VSIP Members site.
This will be made available on the MS Downloads site shortly which will avoid the registration process needed at the VSIP site. Oh, and we've posted the VS SDK docs into MSDN online. Very cool to see the team opening this up to a wider audience.