The official source of information on Managed Providers, DataSet & Entity Framework from Microsoft
The information in this post is out of date.
Visit msdn.com/data/ef for the latest information on current and past releases of EF.
For Code First to a New Database see http://msdn.com/data/jj193542
For Code First to an Existing Database see http://msdn.com/data/jj200620
This post covers Code Only improvements in the CTP2 release for VS 2010 Beta2. This walkthrough shows how you can change the default model like specifying property facets and navigation property inverses as well change the default mapping by changing the default inheritance strategy and table and column names. You can learn more about the CTP2 Code-Only improvements from our blog post on the EFDesign blog.
Code Only ships as part of the Microsoft Entity Framework Feature CTP 2. The CTP works on top of the latest version of the Entity Framework released as part of .NET 4.0 Beta 2.