Despite support for x509 Workload Identity Federation being added in #10373, is it yet to be made available for use as it's a preview feature?

Looking at externalaccount.go, NewCredentials doesn't seem to have a way of adding a Certificate in the Options.CredentialSource, which is then not added to internal/externalaccount/externalaccount.go Options.CredentialSource.Certificate.

Is this the right approach to retrieve credentials using WIF with x509 SVIDs?