Erin Stellato shares an update:
SSMS 20 is the first major version of SSMS that supports Strict encryption and TLS 1.3, thanks to the migration to Microsoft.Data.SqlClient (MDS) 5.1.4. MDS is the data access library used by SSMS 19 and higher, as well as other SQL Server tools.
Read on for a quick primer on terminology, as well as what it means to force strict encryption. I’m not sure how quickly companies will jump on this, especially given the features that don’t support strict encryption yet, such as availability groups, replication, SQL Server Agent, database mail, linked servers, and PolyBase’s connector to SQL Server.