Last week the data team shipped the Release Candidate of Entity Framework 4.1. You can learn more about it and download it here.
EF 4.1 includes the new “EF Code First” option that I’ve blogged about several times in the past. EF Code First provides a really elegant and clean way to work with data, and enables you to do so without requiring a designer or XML mapping file. Below are links to some tutorials I’ve written in the past about it:
The above tutorials were written against the CTP4 release of EF Code First (and so some APIs might be a little different) – but the concepts and scenarios outlined in them are the same as with the RC.
Read more on scottgu's blog: RC of Entity Framework 4.1 (which includes EF Code First)