Here is Melisa's statement in post #1: "The Immigration Department has extended the legal stay for tourist to 60 days..". This seems to imply that the tourist card will now be valid for 60 days. The letter from MIP seems to say the same(?).
Then, from the letter from MIP, those who need to stay in the country for more than 60 days need to apply for the applicable visa:
"...los nacionales extranjeros que pretendan permanecer en el pais por un periodo mayor a los 60 dias, por estudios, trabajo, residencia, inversion, o otra actividad cuya naturaleza requiera exceder el periodo establecido, deben solicitar el visado correspondiente....". "Tourist isn't mentioned - just students, workers, those applying for residence, investors, and others that have a specific need to stay longer(?).