Yea, the same happened in WAR and Rift, and probably a few other games. The server caps on release were lower to kinda force people to spread out. After a week or two they raised the caps to the right level. It will be pretty bad on 20th when it's released officially, and probably upto xmas/new year but should then calm down as the novelty wears off and people who don't actually like the game will leave.
I'd prefer the queues to be huge.. shows the game is popular... I don't want to play a game which will die in 2 weeks.