Our friend Boubouille over at MMO Champion has done some more digging in the datafiles
of the beta realms, and pulled out a brand new boss in Karazhan of all places. Meet Prince Tenris Mirkblood of the San'layn
, a group of elven princes aligned with none other than The Lich King himself. He's not live on active servers at all -- again, Boubouille dug this up from beta realm files, so we may never actually see Tenris in game.
But there are a few quests surrounding the boss as well -- for more on how he might be included in the game during the world event (including possible spoilers), hit the link below.