https://www.gamespot.com/articles/pubg-creator-comments-on-xbox-one-x-version-wants-/1100-6455028/

PUBG is coming to Xbox One in under a month, and now Playerunknown himself has commented on the benefits that people playing on Xbox One X may see. Speaking to GameSpot, Brendan Greene said first and foremost, the Xbox One X edition will offer a "higher graphical fidelity" compared to the standard Xbox One version. He added that he would like to see 4K textures on Xbox One X, but said this is unconfirmed at the moment.

"There will obviously be a higher graphical fidelity," Greene said. "But the experience should be the same. We want to maintain a similar experience across all platforms. There shouldn't be an advantage to buying one console over another."