Can. 230 §1 Lay men whose age and talents meet the requirements prescribed by decree of the Episcopal Conference, can be given the stable ministry of lector and of acolyte, through the prescribed liturgical rite. This conferral of ministry does not, however, give them a right to sustenance or remuneration from the Church. §2 Lay people can receive a temporary assignment to the role of lector in liturgical actions. Likewise, all lay people can exercise the roles of commentator, cantor or other such, in accordance with the law. §3 Where the needs of the Church require and ministers are not available, lay people, even though they are not lectors or acolytes, can supply certain of their functions, that is, exercise the ministry of the word, preside over liturgical prayers, confer baptism and distribute Holy Communion, in accordance with the provisions of the law.Well, darn I don't see the term in here but it was certainly in use as far back as 1998 as it appears in the Policy and Procedures for Extrordinary Ministers of Holy Communion from the Archdiocese of Dubuque. So, its certainly not a few weeks or months old.
However, it doesn't matter really how old it is. When the Vatican clarifies that's it. And, I am very sure every Cardinal and Bishop is fully aware of Redemptionis Sacramentum. Every priest should be aware of it as well and should immediately make any changes that may be needed.