Nexon America's answer about Masteria

Let me clarify--they were supposed to basically prepare you for the next area/wave of content. They were more along the lines of say, Cool As Ice, in terms of revelations.
Intent being that now that you knew what happened, each one would carry a certain amount of weight for you to go "ZOMG!" and do the next one, and leave you anticipating what was coming next.

I see. So those quests could possibly come as a sort of teaser if they were close to releasing the next area. Assuming they're still working seriously on masteria that is.

Awesome. I'm sure if those quests were near as awesome to read as cool as ice was i would have foamed at the mouth when the next area came out. D: