In the year 2013 by June most of the .NET 3.5 MCTS exams will be retired along with few .NET 4 ones. Since Microsoft is doing a different Windows Client model with Windows 8, they are passionately retiring the MCTS: Microsoft .NET Framework 4, Windows Applications Development (70-511)

MCTS: Microsoft .NET Framework 4, Web Applications Development (70-515) is retiring too.

In the SQL Server MCTS collection

MCTS: Microsoft SQL Server 2008, Database Development (70-443) is retiring in July 31st.

About the full details about the exam collections and retiring dates refer to the following link.

http://www.microsoft.com/learning/en/us/mcts-certification.aspx