Richard Fortus will be joining X Japan for their three shows at the Tokyo Dome in Tokyo, Japan later this month:
March 28th - Night of Destruction
March 29th - Night of Madness
March 30th - Night of Creation
As you might remember, Richard and Robin played X Japan's "Endless Rain" as part of their guitar duet during some of GN'R's Japanese shows in July 2007.
Source(s):
http://www.4tus.com/ ,
http://www.xjapan.ne.jp/