As I've stated before, I attended the data programming and modeling session - And I enjoyed every minute. Chris Anderson and Don Box rock ! They talked about Entity Framework 4 – The automatic lazy load (no more need to call the damn Load() method), different approached of model first, POCO and code only (using the fluent API) etc. There was a talk about code first having a configuration class instead of writing all the fluent API by hand, and without having to add attributes to your POCO classes...