I don't see the "proof that one has recovered from COVID 19" I guess they eliminated that option.
Looks like Canadian's just added $3,500 pesos to their trip home and it looks like the oov is not going to reimburse them. It also eliminated the getting paid for the 14 day required quarantine.
Davids earlier link said that "Prime Minister Justin Trudeau is leaving the door open to tighter travel restrictions, including a possible ban on outbound air travel as COVID-19 case counts climb across the country."