A couple of enhancements released today
Previously when offering free (price set to $0) recurring membership plans the system would prompt the customer for a credit card even though there was no payment required immediately or in the future. The customer will no longer be asked for their card details.
Previously it was not possible to have free fixed length membership plans and the customer would be required to enter their card details and then would receive an error. The customer will no longer be asked for their card details when signing up to a free (price set to $0) fixed length membership plan.