Although not really news for some, I only just recently heard about Continent of the Ninth. Again, this is another site written entirely in Korean so I've only been able to gather bits of information from other sources.
Word is that it will have some similarities to Guild Wars, in that you can enter instances solo or with a group. Monsters supposedly are smarter than in typical MMO's. They adapt to your actions and if you perform actions that create noise, such as jumping into an area, they can hear you and will attack. There are 20-30 minute dungeon runs that can be set by difficulty. Also, most are speculating that system requirements will be high.
Here are a couple screenshots and a video. The combat in the video might seem a bit over the top but they make taking out groups of mobs at a time sure look like fun: