https://www.polygon.com/2018/6/19/17479026/pubg-sanhok-release-date-qbz95

PlayerUnknown’s Battlegrounds’ third map, Sanhok, and a new weapon will go live with its next patch, which is scheduled for June 22.

Sanhok is set in a dense jungle environment with dynamic weather to help keep things feeling fresh. The map is much more tightly packed together than any other PUBG map, thanks to its small 4km x 4km size, making it a quarter of the size of Erangel and Miramar, PUBG’s other two maps.