There’s been a few people saying that it’d be ready by the time the CA is made generally available, eg:
But regardless, for those who essentially want to continue using the CA in the same way as the prepaid, losing that functionality would be annoying, and may turn them off. If there was a notice saying this functionality is not ready, but will be soon, then those people could delay upgrading till then, rather than upgrading only to find that their favourite feature is missing.