The patch also expands the available arsenal with the QBZ assault rifle, the QBU designated marksman rifle, and a new vehicle, the Rony pickup truck, of which the latter two are exclusive to Sanhok itself. In addition, the patch adds weapon and parachute skins to the game and introduces the new loot crate system. To top it all off, the game is also receiving a handful of performance tweaks and bugfixes. The patch notes also reveal that two new features, War Mode and Custom Matches, are slated for release in the near future, with the former slated for a weekend event later this month and the latter set to release in mid-October.
Source: PUBG forums via Twitter