Code First Migrations
[This page is specific to the latest version of the Entity Framework. The latest version is available as the 'Entity Framework' NuGet package. For more information, see Entity Framework Releases and Versioning.]
The msdn.com/data/ef site is now the main location for the Entity Framework content.
The content for the Code First Migrations topic is now available here: Code First Migrations, Automatic Code First Migrations, and Migrate.exe.