Ether Saga has just entered their open public beta, meaning you can mosey on over to the website and sign up to try the game. Like Perfect World, Ether Saga will be a free to play game, supported by the usual cash transactions from an item shop.
The game does have some interesting features, including the ability to level up your character's affinity to the various elements in the game, adding a new dimension to each class beyond how the class normally functions. Past that, skills can be learned on the fly in the field without the need to visit a trainer, and characters get skills relating to their "birthday," the day of the week that they were born.
For all the information about Ether Saga Online, check out their website at http://eso.perfectworld.com.