http://www.pcgamer.com/gta-online-gets-a-pubg-style-battle-royale-mode-in-the-smugglers-run-update/

The Smuggler's Run update to GTA Online that was announced last week rolled out today, and it brought with it an unexpected surprise: A new and very familiar-sounding Adversary Mode called Motor Wars that Rockstar described as a "tense battle for survival" in which players scrounge for weapons and do battle inside an ever-shrinking "kill box." 

"Blending the adrenaline rush of Drop Zone with the claustrophobic tension of a match of Penned In, this brutal Adversary Mode is a deadly scavenger hunt where second place is not an option," Rockstar said. "Up to four teams parachute into a periodically shrinking kill box strewn with a lethal assortment of guns, explosives and Weaponized Vehicles. Work together, find a vehicle, and fight opposing teams and the shrinking map to survive and win."