Okay, so let me tell you what happened. The following occurred at 5:40 (PM) CST, May 15.
On Trabia server @ Camp Horizon. GM appears named Urianger Augurelt. He appeared with a NPC named Roysia. The NPC was telling us about false prophets of doom or something along those lines. Then the GM started speaking in French... with my limited knowledge of the language I was able to catch words like "supreme purification" and "impending".
The screenshots containing what was said are linked below.
Edit: I believe this has something to do with the new Umbral era.
Edit: This just showed up in my character History:
Seventh Moon Rising
You have heard rumors of suspicious individuals appearing near aetherytes and prophesizing the end of the world.
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Screenshots:
http://imageshack.us/f/683/eventg.png/
http://imageshack.us/f/834/eventii.png/
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NPC dialogue:
Roysia: Aetheryte camps are important outposts that not only maintain peace throughout the region, but also serve as hubs for travelers and traders across the realm. This is why we simply cannot allow the disruption of their operation. Might you lend us aid in keeping the camp safe?
[Yes]
You can start by spreading the word that the city-state will not tolerate this type of behaviour at public camps. Tell these dastards to peddle their fear elsewhere or they shall be thrown in a cell so far underground that only the rats will pay them any heed.
(After saying this Roysia gave me (us) buffs: movement speed +, max HP and MP+. There is also a chance that is was the GM who buffed us before leaving.)