More information about the event will be revealed in the "SAO's Summer Game Live Broadcast", to be hold on August 12 (20:30 JST) at Nico Nico Douga. Tales of the Rays Twitter stated that Ryohei Kimura (Sorey from Tales of Zestiria) will be there!
Tales of the Rays is a Tales mobile game for the iOS and Android featuring characters designed by Hidenori Matsuraba and a new ADF-LMBS (Advanced Flick Linear Motion Battle System). The game tells the story of hero Ix Nieves and heroine Mileena Weiss in the world of Tir Na Nog. Characters from the previous Tales titles appear in this game. The game initially had an English version, but was short-lived and now currently runs exclusively in Japan.
8ro, or Hachiro, is just a regular Tales fan who still hopes Tales of Destiny R gets an english localization someday. And is way too passionate/annoying about anime, games and japanese culture. Also, he loves card games a lot.