Black Desert Online is already a very large game with more in-game activities than most MMORPG's, but it's about to get a whole lot larger with the Mediah Expansion, which is due out tomorrow.
Daum Games is increasing the size of the world by 30% with the new Mediah region to make for a more diverse dominion with extra room to grow kingdoms and, of course, to show off the rather sophisticated visuals, which just so happen to run quite well on a variety of hardware despite the good looking nature of the home-grown graphics engine. In that new are they've added over 1000 new quests, new guild missions, a Crimson Battlefield that allows for 40v40 skirmishes, new weapons armor and equipment and even new craftable alchemy stones.
So that things aren't too terribly easy in the new region of Mediah, a new boss known as the Kzarka, which is an enormous beast-like character, is hiding and capable of taking on over a hundred high-level players at a time. A world boss, so to speak.
The new expansion is part of a massive patch being pushed out to the European and North American servers to catch up to the version already found on the Korean servers. All of the new content, which is a tremendous amount, is completely free. It'll be hitting servers tomorrow, which means they'll be down for maintenance as they become patched. Full patch notes will be released once they're finished.