I did. I've been in the ZX Online PH Beta and Celestial Destroyer MY Online Beta as well. Which are all the same game as Jade Dynasty. I didn'y stick with those version of the game, due to poor English translation. I'm hoping the NA version (Jade Dynasty) has a really good American English translation. Seeing how I was born and raised in NA.
Just saw the gameplay trailer, have done NO other research in regards to the game itself, but let me be the first to say Esther Saga - "For the grown folks". (Same company, most likely same grind, different skills, different monsters, hopefully different damage modifiers).
Edit: But since I try every game out...I'll give it a go too.