Blizzard has released dates and times for player testing of the massive upcoming World of Warcraft raid instance, Ulduar.
A new method of testing content was disclosed by Blizzard recently, that some parts of the raid will be tried out by European players and other parts by American players. Some encounters will not be revealed at all until the patch arrives on live servers, meaning that all testers should get to see new content when they enter the raid in the live game.