• Events to customize code generation
• Abstract types in EDM models
• Complex types
• Using support in metadata files
• Entity key serialization
• Increased persistence ignorance in entity data classes
• Improved connection management in ObjectContext
• Improved DataBinding usability
• Metadata annotations
• Better support for span over LINQ to Entities queries
• Improvements to LINQ queries: additional canonical functions and automatic mapping from CLR functions to server functions
• A new event for extensibility of SaveChanges
• Usability and consistency improvements
• Polymorphic results from stored procedures

private String ReverseMapPath(String PhysicalFilePath)
{
    String AppPath = HttpContext.Current.Server.MapPath("~");
    String url = String.Format
        ("~{0}", 
         PhysicalFilePath.Replace(AppPath, "").Replace("", "/"));
    return url;
}