Join Date: Nov 2007
Location: Sao Paulo, Brazil and Porto, Portugal
Programs: AA Executive Platinum, LH FTL, FB Gold, LATAM Black Signature
Posts: 587
They have had that for a few years in GRU, both International and Domestic departures.
It is much appreciated, as the lines might get long on peak hours in the regular priority counters.
They will politely ask you to confirm your status, and redirect you to the regular priority counters (including J Class pax) if you are neither Black Signature or Black status holder.