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.

Now it's time for this:



So, looks like these quests are more of a spoiler to come. In my opinion, I think Nexon won't release these quests until the next area of Masteria is complete/near completion.