While Bandai Namco Entertainment have not announced Sword Art Online: Lost Song for the West, an English version has been in the works. It’s scheduled to come out debut in Asia next week with Sony Computer Entertainment Hong Kong as the publisher. The English version will have Japanese voice acting.
Sword Art Online: Lost Song takes place in ALfheim Online where you can control Kirito and other characters from the anime series. Bandai Namco is still updating the game in Japan and a recent update added two more playable characters plus more big boss battles.