테라 | TERA
Bluehole Studio's Tera (The Exiled Realm of Arborea) - Because it's basically Lineage III with another name, and because the guys behind it are South Korean MMORPG dev-gurus. It features action-based battle system (say goodbye to the old-fashioned mmo battle systems), a battle system that we first saw it in the Continent of the Ninth (C9) MMO game. It also features amazing visuals powered by the Unreal Engine 3.
블레이드 & 소울 | Blade and Soul
NCSoft's latest action MMORPG. It also uses the Unreal Engine 3. Expect amazing visuals as well. Art direction is beeing made by Kim Hyung-Taek, his previous work can be seen in the Korean RPGs, Magna Carta.