PicketLink does not provide support for CAS, yet. But I think we're ready to support that considering what we already have, from a architectural perspective.
I really would like to help you on this, if you want to. So we can try to get PicketLink and CAS integration working together. Feel free to ping me on #picketlink at IRC/Freenode.
Any progress on that? I really would appreciate a solution for this.
No progress. You might know that PicketLink and Keycloak projects are now merged. Our IaM efforts were redirect to Keycloak.
I would suggest you to ask for any CAS integration plan by posting a message to keycloak-dev mailing list.