I heard that in future releases of vCenter vmware is no longer going to support AD Authentication. Can anyone confirm this?
Its "only" IWA which goes deprecated. Take a look to https://blogs.vmware.com/vsphere/2020/05/vsphere-7-integrated-windows-authentication-iwa-ldap.html
So instead of using IWA you should use LDAP(s).
Regards,Joerg