From Wonder King Online Wiki

Well if you read what I said on Dark Village. I'll tell ya again. (This place is to get your Third Class Advancement btw)
Don't expect this to come out with in the next year or so. ;o (It's still not out in the Korean version which is over 2 years old, Japanese version being over 4!) This place and Dark Village will come out together in the same patch... at least they should anyways.