Microsoft Kills Linq to SQL
ayende.com
ayende.com
"We are listening to customers regarding LINQ to SQL and will continue to evolve the product based on feedback we receive from the community as well," is not remotely the same as killing Linq to SQL.
At least in open source you can fork the project.
[edit: format]
Even if you were so hopelessly dependent on Linq to SQL that you couldn't trivially port to Microsoft's newer persistence solution, you're still not up a creek.