I will be honest, if you would have asked me 5 months ago if I would have seen Lich King dead in either 10 or 25 man, I would have told you not likely. However, today, I have the title of Kingslayer. Last night, my guild, Conquest, downed 10 man Lich King to much celebration.
Congrats to Conquest on downing 10 man Lich King. Hopefully, we can now move on to down Lich King in 25 man and start working on heroics in both 10 and 25 man.