Speaking rather cryptically via Twitter earlier today, Brendan Greene—aka PlayerUnknown himself—said "I couldn’t come to Gamescom and not reveal a little something new! More info tomorrow... ".
Those words feature alongside an image, which appears to depict red and black targets, housed within a makeshift container-built maze. I reckon that layout looks perfect for testing weapons.
I couldn’t come to @gamescom and not reveal a little something new! More info tomorrow... pic.twitter.com/OIPyreCC8cAugust 21, 2018
I'm of course not the only one who thinks so, as a quick gander at the above tweet's comments clearly shows.
I guess we'll find out either way tomorrow—check back for an update as soon as we know more.