Spooncraft

The same thing happened before Burning Crusade was released; all the new talents and geographical changes (new docks and teleport orbs to reach the Exodar or Silvermoon City) were added to the game and then as things progressed in the Beta, players on live had their newly acquired talents modified.

When this hits the PTR I will not be the least bit surprised to see it last for two months or so before hitting the live realms in preparation for the Wrath of the Lich King.

None of the classes are done. They are still being iterated on. 3.0 will be on the PTR’s soon. There is still a lot of testing before 3.0 would go live to public servers. If you look back at past patches, we’ve had patches on the PTR for over 2 months before. (src)

Additonally, achievements will be made available in the patch as well to get the ball rolling on that system.

Originally, the answer was no. We were going to wait until Northrend opened. But we will most likely put the system live for 3.0. This could of course change but the current leaning is to put the system live with 3.0. (src)