Webzen also announced that it has several brand-new titles that the company is planning to reveal fairly soon, perhaps at G-star. These MMOs include an expansion to MU Online, MU2, and the mysteriously titled Project A.
MU2 is being developed using the Unreal Engine 3 and takes place before the events of MU Online. Project A, on the other hand, is all about large-scale battles in the Middle Ages -- perhaps somewhat like Medieval: Total War.
We'll be keeping an eye on Webzen as it expands its lineup in the coming months!