Transport Layer Security (TLS) Protocol Version 1.3 was approved by IETF in March, 2018, and is slowly making its way onto the internet.
TLS 1.3 in Chrome is available and can be enabled manually.
To enable it, in Chrome address bar type: chrome://flags/
Scroll down to find "TLS 1.3", then change the drop down list to "Default."
To make sure that TLS 1.3 is active in Chrome, test your browser.
Go to https://www.ssllabs.com/ssltest/viewMyClient to run a protocol check. The results of this test should tell you that TLS 1.3 has been enabled.