The differences between the new Mass (1969 a.D.) and the old Mass (approx. 500 a.D.) regard much more than the language.
Latin is still the official language of the Catholic Church, although one wouldn't know it from the hostility to Latin by the current leadership of the Church. It has been said by exorcists and theologians that the devil hates Latin and the traditional Latin Mass. Things that make one think "Hmmm?"
According to The Canons and Decrees of the Council of Trent (English translation Rev. H.J. Schroeder, O.P. TAN Books Rockford, Il dated 1978) 22nd Session Chapter 8 page 148 “Though the mass contains much instruction for the faithful, it has, nevertheless, not been deemed advisable by the Fathers that it should be celebrated everywhere in the vernacular tongue.”