I had the problem like this with another movie... so... just in case someone wants to know. Apparently in December 2019, the director Franco Verdoia went to Las Varillas (City where he is from) to premiere the movie.

Note in spanish: https://www.radioestacion.com.ar/se-presento-la-pelicula-la-chancha-en-las-varillas/

I make this post because when i first saw the movie here it had the 2019 premiere date, then it had the 2020 official release date and now i re-added the premiere date.