Death Knights... hundreds of them... roaming like cattle throughout Hellfire Peninsula... so many death grips... the horror... THE HORROR!
But yeah, it's a little late in the cycle now to add in a new class/job (though hot damn, wouldn't THAT be a pleasant surprise for the beta) to release alongside acn/smn. I am expecting to see a TON of them running around, which is one of the reasons I suppose they're making them hybrid-ish.