20th December review date has gone form the IATA website now.
Found this new report but not much else, looks like I'll be constantly moving the date of flight back just so I don't have to cancel it
BUENOS AIRES, Dec. 18 (Xinhua) -- Argentina has decided to extend what it calls Social, Preventive and Obligatory Distancing regulations to control the spread of the novel coronavirus (COVID-19) until Jan. 31, 2021, President Alberto Fernandez announced Friday.