https://www.gamespot.com/articles/monster-hunter-world-spring-event-mega-man-armor-c/1100-6457392/

A lot of new content is on the way soon to Monster Hunter World. In addition to the game's first big update next week, which adds the returning monster Deviljho and makes an assortment of balance changes to almost every weapon type, players have a few new events to look forward to in the near future.

Early next month, Capcom will kick off the Spring Blossom Fest, the first seasonal event in Monster Hunter World. The festival begins on April 5 at 5 PM PT / 8 PM ET (12 AM GMT on April 6) and runs until the same time on April 19.