Yes, Registrars will need to ensure they have configured their systems to submit the create / renew / transfer commands in the appropriate format, which includes a price acknowledgment on period-based-fee-incurring transactions. This acknowledgment is mandatory, and failure to do so, results in the domain create / renew / transfer operation being unsuccessful. This is done through an extension in the EPP. An example command follows:
Are there any special requirements for Registrars to be able to offer fTLD Premium Names?