The 10 years of support on CentOS 8 was published on centos.org's wiki: https://web.archive.org/web/20201101131417/https://wiki.centos.org/About/Product https:

The 10 years of support on CentOS 8 was published on centos.org's wiki: https://web.archive.org/web/20201101131417/https://wiki.centos.org/About/Product https://web.archive.org/web/20201101131417/https://wiki.cent... Red Hat's explanation was something along the lines that it was a wiki and not guaranteed to be accurate? I don't think editing was open to to people outside of the CentOS org.