This looks like a very awesome game, in the classic style of Ragnarok Online in a modern take. It has several new jobs / classes, in fact it has a lot of new and exciting classes. I will will keep an eye out on this game and I can't wait to try it out when it enters alpha or beta in Korea. Hopefully I can get in somehow.
Visit the official site here for more information:
http://blog.treeofsavior.com/en/