I just found out about this game and it looks amazing! The beta for it is supposed to start in 2015, hopefully it will come out with an English version too. I highly suggest you watch the full trailer, some of the stuff in it looks so awesome.
Official site (In Korean) - http://www.lostark.co.kr/Home/Web#
More information - http://steparu.com/previews/mmorpg/1...-debut-trailer