Quick update for Development projects using Microsoft.NET and projects which have made investment in Linq,
As of Microsoft.Net 4.0 Framework, “Linq To SQL [L2S]” will not be recommended and “Linq To Entities” [L2E] will be the recommended Data access solution. Entity Framework [EF] will address most of the needs of L2S, some of the features which dev community wants in EF are already part of the L2S and Microsoft will be making investment in making both tools alike.
Ref: http://blogs.msdn.com/adonet/archive/2008/10/31/clarifying-the-message-on-l2s-futures.aspx
