WCF tool extensiblity samples have shipped
The WCF tool in the Visual Studio exposes several layers of extensibility APIs. Those were built into the product to make a third party could extend the feature to make it easy to use in their special environment, or make the feature work in a third party environment.
Those extensibility points include:
1, a set of VSIP APIs to allow third party feature to list and manipulate WCF references inside a project;
2, allow a third party project system to enable/disable the feature, and how to store the information in the project system;
3, a way to extend the current “add service reference” dialog to help finding services;
4, support and extend standard WCF extensibility model, including support WSDL/Policy importer extensions, and allow extra settings of the extensions to be persisted in the reference.
Those new samples could be found at https://www.microsoft.com/downloads/details.aspx?FamilyID=d9000e2c-bd3f-4717-a181-723960814e16&displaylang=en