Many adventurers have noted that something odd is afoot in Norrath. People are acting strangely indeed!
Normally reasonable people seem to be more aggressive and Norrathian heroes have noticed many strange behaviors in their home towns!
Currently in the game is most of the In the Absence of Fear achievement that currently shows up in the House of Thule section of your in-game achievement window.
According to SOE, on Monday, September 27 the "third part" of the Prelude Events will happen. The "fourth part" will happen on Monday, October 4.
See Fanra's EverQuest Wiki for information on In the Absence of Fear and House of Thule.