Yeah, the page seems to be suggesting the chain skillset.
The content translates to "Call of Destruction". And many parts are just descriptions, nothing important or anything. One fun fact is that a part of tickets prices will be going to "Nexon Children's Rehabilitation Hospital", which I assume is some good deed of Nexon in Korea.
The KR Test Team is for the most part dead after Nexon's poor handling of Kingofrunes' account. The best source you can get probably is the discord server Ironwoman suggested.
Chain skillset? How would that even work? Something similar to Vella's blades from Vindictus would look terribly awkward in a game unable to do physics in any capacity, not to mention that we already have several mid-range talents and all of them are pretty good. As far as skills go, revamping Fighter should be their priority.