With the release of RHEL8 the RHCSA and RHCE training & certification content has been revised to keep in pace with the technology changes and updates.
The RH254 (RHEL7) has now been replaced with RH294 – Red Hat Enterprise Automation with Ansible.
If your certification on RHEL7 is still current, you need to just pass EX294 to upgrade to RHCE in RHEL8.
If your certification is not current, then you need to pass EX200 (RHCSA on RHEL8) and also pass EX294 exam to upgrade to RHCE on RHEL8
