https://wccftech.com/monster-hunter-world-iceborne-out-now-on-pc-supports-dx12-amd-fidelityfx-cas-and-upscaling/

Monster Hunter World Iceborne is out now globally on PC (via Steam, though you can buy it at a slight discount via Green Man Gaming), CAPCOM announced with a press release. The expansion (which requires the base Monster Hunter World game) adds a number of PC specific technical improvements, and there are also some bonuses to be snatched as part of the launch event.

The PC version of Iceborne includes features such as a high resolution texture pack, customizable graphical settings, DirectX 12 support, plus optimization for FidelityFX CAS and upscaling. Additionally, mouse-and-keyboard controls have been revamped across the board to better suit the new actions and abilities on PC.