According to their FB page, SEF is now up to 2020 Q4. They also gave some numbers for how many applications that is:
Starting this Tuesday, those interested with ARI applications, for the fourth quarter of 2020, will begin to be notified by the Foreign and Border Service (SEF) to schedule. Overall, there are about 1.680 applications, thereby completing all applications submitted by the end of 2020.
It is recalled that the SEF began on 15 December scheduling in chronological order to grant ARI, and citizens whose application was accepted until September 2020 have already been notified, i.e. more than 2.500 notifications