I'm back from a very nice family holiday.  As announced on the VSX Team Blog the DSL Tools team has joined up with the Visual Studio Ecosystem team.  We're working out how to integrate the DSL Tools authoring into the overall VS Extensibility experience. We don't think of modelling as a separate activity, rather as one of the many tasks that you undertake during software construction, that needs to be integrated as tightly as possible into the overall develop / build / debug / test / deploy experience. So this is a great move for us.