Google started the rollout of DNS over HTTPS yesterday in Chrome Stable with the release of Chrome 83 Stable to the public.
The company calls it Secure DNS. DNS lookups are unencrypted by default; this means that DNS may be used to track the sites that an Internet user opens. Additionally, since it is unencrypted, bad actors may exploit it to manipulate or tamper with the connection, e.g. for phishing purposes.