The SDK team has released the June VS SDK CTP.  This release includes new web sites and web applications integration for the IronPython language.  While it is still a work-in-progress, the project system works and you can have a look how the registration of the templates work.  You can download it at the usual: http://www.vsipmembers.com

Another addition is the SVGViewer example that showcases how to easily add file viewers in VisualStudio.  One thing currently missing from this release is actual SVG files to see how the sample works.  You can get some at the SVG home page: http://www.w3.org/Graphics/SVG/

It is also missing the usual SDK behavior of starting Visual Studio using the experimental hive.  While you wait for the next CTP build of the SDK, you can add the following code in the svgviewer.sln file to get this behavior:

 GlobalSection(ExtensibilityAddIns) = postSolution
  DebugSamples.Connect = 1;Configure Project for VSIP Experimental Environment;ConfigVSIPDebug
 EndGlobalSection

This calls an Addin that is installed with the SDK to automatically start Visual Studio when debugging a package.