They have not even beta tested the xpac there is no way. Beta usually last 5-6 months. Even if they go into beta the day after blizzcon the earliest you will see the game is March and that's unlikely. Also if it were to come out for Christmas that would mean that 5.4 has only been out for like 3 months.... 3 months to finish the last raid in this xpac? When DS was over a year? Never going to happen. Not to mention that this tier is 14 bosses compared to DS's 8. They made the tier bigger so it would last long enough for them to push out the new xpac. That being said they have also stated that DS lasted WAY to long. As I said earliest you will see it is March. I myself see late April early May.