The Microsoft’s ADO.NET team has released the latest Entity Framework Feature CTP,which is now available for Download from the http://www.microsoft.com/downloads/details.aspx?FamilyID=4e094902-aeff-4ee2-a12d-5881d4b0dd3e&displaylang=en . Remember that Entity Framework 4 was released together with Visual Studio 2010 in April 2010
The new CTP is called as Entity Framework Feature CTP 4 that includes the early preview of the Code First features.
CTP stands for Community Technical Preview .
The .NET Framework 4 is a mandatory/ pre-requisite for the installation of the CTP.
This includes quite a significant features of new conventions for code first feature and also the productivity improvements for writing a quicker and simpler code .
What is Code First Feature ???
In simple terms , Code First Feature is about creating our data model using classes(C#) .
This version is just an CTP Release that includes some additional features of EF4 and seems like these will be included with the future releases of the Entity Framework .