Stuart Kent has blogged about the new features they are planning for DSL Tools in the Visual Studio 2010 timeframe. Of particular interest are: Dsl extensibility. Extend the domain model and behavior for a DSL after it's been deployed, including DSLs shipped by a third party. Readonly. Selectively switch off the ability to edit models and model elements in a designer. Forms-based UI. Easily bind models to winforms and...