Do we know yet...Follow

Well, I know it will be in Eastern Plaguelands but I'm not sure exactly where in there. Any players in the alpha testing form might know something more concrete.

Also they start off inside a Necropolis, but again, where it is, I don't think was mentioned other than 'eastern plaguelands'

post a link, or it isn't true.

Yea, they are supposed to have worked for the Scourge, and decided to break away, so thats perfectly reasonable.

Thanks for the info, I suppose I won't know anything more for sure till release gets closer.

From what the designers have said about the class, DK will be those who willingly served the Lich King, but for some reason (to be made clear during the "training" quests) broke away. The people who were taken were likely those who were exposed to the plague and made into the mindless lesser undead. With the exception of Sylvannas, whom Arthas left with a trace of personality so she could witness what she did in the name of the Lich King; the only servents of the Scourge left with sentience were the willing, like the liches and death knights. Obviously, the Forsaken owe their existence to the folly of Arthas in wanting to torment his foe beyond simple death.

The latest I heard (damn, can't remember where though ... or I'd link it) is that since Naxx is being moved to Northrend, the current Naxx will be replaced by another Necropolis and it is there that the Death Knight players will start their journey.