Man ved aldrig hvad fremtiden vil bringe, men indtil videre bakker MS op omkring EF.
http://msdn.microsoft.com/en-us/data/bb525059.aspxWe do, however, expect that the bulk of our overall investment will be in the Entity Framework, as this framework is built around the Entity Data Model (EDM). EDM represents a key strategic direction for Microsoft that spans many of our products, including SQL Server, .NET, and Visual Studio. EDM-based tools, languages and frameworks are important technologies that enable our customers and partners to increase productivity across the development lifecycle and enable better integration across applications and data sources.