http://xbox360.ign.com/articles/694/694493p1.html
March 8, 2006 - Famitsu Editorial Director Hirokazu Hamamura has revealed in the latest issue of Weekly Famitsu that a major RPG announcement will soon take place for Xbox 360. According to Hamamura, if this game were released on the PlayStation 2, it would sell 500,000 copies.
So what is this mystery title? We'll leave the speculation to you, but it should be noted that Hamamura did not specify if we're dealing with an original game a franchise title.