User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-4813670-20130325204549/@comment-1837917-20130326005856

Just had a look at the Event Quests, I'd say when the MH3U team gets around to regular updates of DLC. If you recall, the game has only been out for 3 days worldwide. Once it's been a week since then, you might see some updates.