The Transport Layer Security (TLS) Protocol Version 1.3
New features introduced in TLS 1.3 include:<p><pre><code>  * smaller latency (0-RTT: zero round-trips support).
  * removes insecure encryption primitives (SHA1, MD5, RC4).
  * elliptic curve support.
  * downgrade protection.
</code></pre>
Some interesting reads: <a href="https://blog.cloudflare.com/introducing-0-rtt/" rel="nofollow">https://blog.cloudflare.com/introducing-0-rtt/</a> and <a href="https://www.cloudflare.com/learning-resources/tls-1-3/" rel="nofollow">https://www.cloudflare.com/learning-resources/tls-1-3/</a> .