As was detailed in their 2020 roadmap, Capcom has released Title Update 3 for Monster Hunter World: Iceborne, which adds new Variant monsters Raging Brachydios and Furious Rajang.
The update will launch in March for the PlayStation 4 and Xbox One, and in April for the PC version. Monster Hunter: World and the Iceborne expansion are available now for PlayStation 4, Xbox One, and PC.