When does the new GIRM take effect?

Our priest said that we are not bound by the 2003 GIRM because it refers to the new translation of the Mass and only when it is in the Sacramentary with the new translation will we be bound by it. Therefore we are still bound by the old GIRM. Is he correct?

The latest version of the General Instruction of the Roman Missal (GIRM) contains a Decree of Publication, dated March 19, 2003, which states, “Effective immediately, this translation of the General Instruction of the Roman Missal is the sole translation of the Institutio Generalis Missalis Romani, edition typica tertia for use in the dioceses of the United States of America”.

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