The English localized version of Ar Tonelico 3, titled Ar Tonelio Qoga: Knell of Ar Ciel will be heading for the PS3 on March 2011.
NIS America will be publishing the game in the US and the game has been rated for 17+ and above.
The Ar tonelico Qoga premium box set will bundle the game along with the official visual as well as the soundtrack of the game.
Ar Tonelico Qoga (Ar Tonelico 3 in Japan) is the 3rd and also the last installment of the trilogy series, with the first two parts of the trilogy making it on PS2.
Check out the official site for more information.