Object Gateway Guide - surplus "region" to "zone group" replacement?

The first paragraph of:

https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/2/html/object_gateway_guide_for_red_hat_enterprise_linux/object_gateway_configuration_reference#zone_groups

consists of: "Formerly called a zone group in v1.3.x".

Should it be: "Formerly called a region in v1.3.x" instead?