@stevebaer: Changes to RhinoCommon are also relevant for the following scenario:
We have C# and C++ plug-ins and need to load the C# plug-ins into the debug version of Rhino to be able to debug the C++ plug-ins. If the debug version of Rhino is only targeting SR7 it will not load C# plug-ins that are dependent on SR8 or SR9 RhinoCommon version.
@dale and @brian usually take care of getting updated C++ SDKs shipped. I know Dale is out of the office this week so it may take a few days to get a decent response back on this issue.