The product was called "expanded support" before. It was used to buy companies out of their RHEL contract before the renewal date, and ship SLES for new deployments. Nothing new.
Ahh yes, there was that kind of thing as well. SUSE provided us with ways of replacing all packages on a RHEL running system with SUSE augmented CentOS packages. It was often used by people who wanted a cheaper alternative to RHEL, but still wanted CentOS for their random 3rd party apps.