"They’re calling it the World Of Warcraft Starter Edition, and it’s still limited by other trial aspects, such as not being able to use the auction house, and suffers a few other caps such as a limit of 10 gold. If trialees get to level 20 and want to open up their game and keep playing then it’s possible to to purchase the Burning Crusade for $20 and subscribe for the normal amount. The Burning Crusade has also now been unlocked for free for anyone who owned the original game."Question now is: is this Blizzard feeling pressure from the F2P revolution or Blizzard just trying to hook more subscriptions on an aging game? Only time will tell.
EDIT: Oops, said it was the first 25 levels when in fact its only the first 20.