Firefox, Chrome, Safari and Edge browsers will start throwing up warnings when users visit websites that only support Transport Layer Security (TLS) versions 1.0 or 1.1.1. The move is part of a joint plan to phase out support in October 2018. Google estimates around 0.75% of page loads are now too many. Any holdout sites will have to enable the later version of TLS 1.2 or, ideally, 1.3, or face having no traffic. Mozilla is committed to ‘eradicating weak versions of TLS'”]
Source: https://nakedsecurity.sophos.com/2020/02/12/mozilla-issues-final-warning-to-websites-using-tls-1-0/