Microsoft is ensuring that customers can remain compliant with the current changes in guidance for using strong cryptography for implementing security control. A number of known vulnerabilities has been reported against SSL and earlier versions of TLS which has changed the security guidance to move to TLS 1.2 for support secure communication.
There has been no known vulnerability that has been reported for Microsoft’s TDS implementation which is the communication protocol used between SQL Server clients and the SQL Server database engine.
As of January 29, Microsoft SQL Server supports TLS 1.2 for SQL Server 2008, SQL Server 2008 R2, SQL Server 2012 and SQL Server 2014 and major client drivers like Server Native Client, Microsoft ODBC Driver for SQL Server, Microsoft JDBC Driver for SQL Server and ADO.NET (SqlClient).
You can read more about the release here. The list of builds that support TLS 1.2 along with the client and server component download locations is available in KB3135244.