This week I gave a talk at TechEd focusing on architectural considerations as well as some useful tips for creating n-tier applications with the Entity Framework v3.5SP1. The code from the simple sample application is now available at http://code.msdn.microsoft.com/dtl401sample/. It includes:
Have a look and let me know what you think. Of course this is not the end-all-be-all of anything. It’s just a sample designed to illustrate a few concepts, but maybe someone will find it useful.