As of February 2020 Red Hat has removed the :latest tag for a number of Container Image repositories available in the Red Hat Container Catalog. This behavior is gradually being rolled out and will apply only to container image repositories which are used for multiple versions (or streams) of a supported product or a subset of it’s containers, for the purposes of this article these container repositories will be referred to as “Multi-Stream” repositories.
https://access.redhat.com/articles/4301321 (subscription required)