This is being tracked by the following https://issues.redhat.com/browse/RFE-1697.
Ingress v1 and IngressClass are implemented in OpenShift 4.8 as described in this enhancement: https://github.com/openshift/enhancements/blob/master/enhancements/ingress/transition-ingress-from-beta-to-stable.md Let me know if you have any further concerns.