I believe they are just there.

*edit: Ninja post

There's an entire area of demons and demon worshippers in the center of the southern edge of the desert, but I've never found a quest hub for the area. I dropped in and killed a bunch of them, but no quest items dropped. Are they for a deprecated quest chain, or am I missing something?

How the hell...?

funny, i was swappin' instances earlier for awhile askin' everyone if they knew anything about 'em. i just ran across 'em by accident.

i'd love to know...

think I got a quest chain at somepoint near the snake guilch quest hub to bring somethign to them or kill some of them...

can't remember though but there was a level 20+ish quest thing I think...

I seem to recall doing a quest there either in beta or head start.

If you did, it was closed beta.
There was no quest there in OB or HS.
Now there is only the piece of Lore one can find.