If you are using Entity Framework to create data access applications, then there’s a new update to Entity Framework 4.1. EF 4.1 was announced in April. Microsoft has just released EF 4.1 Update 1 to fix some bugs as well as introduced some new types.
There is no more the need to specify ‘Persist Security Info=True’ in the connection string when using SQL authentication for Code First development. New types DbContextInfo and IDbContextFactory<TContext> have been added to make it easier to interact with DbContexts.
Download the Entity Framework 4.1 Update (standalone update)
‘EntityFramework’ NuGet package
If you are interested in developing data apps using Entity Framework, make sure you read