Perfect World International has just revealed the new expansion on their website, and here is the new race, Tideborn, and the 2 new classes, tentatively named Assassin and Psychic. There will be a whole new starting area, which is of course underwater. After the land and aerial battles, its time to do battle under the sea~! You can view some of the artwork below and at the official website. However, the 2 character models are not there ~!!! The expansion is due end 2009 for both the Chinese and English servers.
Update: The trailer video for the new expansion.