Found some really cool info on the AoC wiki site.
http://aoc.wikia.com/wiki/User_Interface/LFG
Scroll down a bit to the PVP section and it goes a little indepth on the pvp mini game system.
It appears that we can expect it to be similar to Guild Wars or Auto Assualt. Where they have put PVP in the game, but aside from the "main world".
We'll be able to make our own match, customize some options and even password lock it.
I love the fact that they added this, i would have been content with just the seige battles and PVP grounds.
Need a pvp fix? NP, just click a button... Now im going to have a hard time finding a reason to put this game down...