The newest version of the TLS protocol was recently approved by the IETF -- version 1.3. There are several key changes in this protocol such as a requirement to use Perfect Forward Ciphers, and the introduction of a Zero Round Trip Time handshake for session resumption. In this video, John outlines many of the important features of this new protocol.
https://community.f5.com/articles/lightboard-lessons-explaining-tls-13-31220