The Design time databinding Release candidate is live! You can all test the design time databinding support now, by going to the runtime libraries section and by selecting item 3 in the list, the design time databinding release candidate. Be sure to read the readme and the updated documentation on databinding.
Added: design time databinding support for entity collections, typed lists and typed views (Adapter & Selfservicing)
Added: ICustomTypeDescriptor implementations on all entities to avoid unwanted columns in webgrids.
(EDIT) There is a build error in the VB.NET templates. Working on it (I forgot to run the build tests, my bad)