Palo Alto Firewall
Yes, CCP 4.3.0 (latest CCP) doesn't support this yet.
I don't see that on the road map yet, even for CCP 4.4, so I am guessing it will be a while before the feature is certified for CCP.
Is there any specific requirement you have? If so, you can always open a support ticket with Citrix and let your requirements known to the product management.