Perhaps also/more OT, but in the past couple of months I've occasionally observed my Gmail web connection using QUIC instead of TLS. They are already trialing

Perhaps also/more OT, but in the past couple of months I've occasionally observed my Gmail web connection using QUIC instead of TLS. They are already trialing it publicly and in non-beta use (discounting whether Gmail is still "beta") at least in Chrome stable on Linux.