We already knew that the first free Monster Hunter Wilds content update is scheduled to arrive next month. Capcom has specified that it will be in early April, with details to be provided by the end of March.
Meanwhile, we know that this patch will add the leviathan Mizutsune to the game's roster. That won't be the only new feature, as it will also include a new location for hunters to gather and interact with each other. Features, fixes, and other adjustments will also be included.As for the second content update, it will arrive sometime this summer.