Yesterday I deployed a change on www.bbc.co.uk/.com, account.bbc.com, our main media mediation service etc. which soft-disabled TLS 1.0 & 1.1.
Requests over TLS 1.0/1.1 on ^ result in an error page (inc link to a feedback form).
So far I've uncovered a load of internet junk inc. a fleet of old TVs in Asia which poll our weather pages for their local forecast but nothing's been reported broken yet.
Really wish the web had a deprecation strategy. This is a lot of work.