While this is NOT confirmed news, I felt that it was reputable enough for me to go ahead and post it here.
Heath from X-Japan, in recent fanclub newsletters, has confirmed that former X-Japan members have been in talk with Sugizo about a possible "revival" Budoukan concert commemorating X-Japan, with Sugizo filling in hide's position. Conjectures by fans have been made about the Yoshiki-Gackt project; Toshi's status in terms of his stance with the music industry has lead many to believe that Gackt might possibly be filling in for Toshi, which will make the lineup as follows:
Gackt - Vocals (possibly piano?)
SUGIZO - Guitar
Pata - Guitar
Heath - Bass
Yoshiki - Drums/Piano
While this does NOT come from a news site and none of this is confirmed seeing as it is NOT on SUGIZO.com or anywhere else, considering the fact that it comes from
Heath's fanclub newsletter that he personally writes, I believe this is valid information that should be shared.
This is what we know to be absolutely true though: they're in talks about it, at the moment.
One Japanese website discussing this can be found here. I've been told from a trustworthy source that this site is a trustworthy news source:
http://ameblo.jp/uraurageinou/entry-10020300093.html
If anyone can translate the above, that would be great. Also, if anyone finds anything to the contrary of what has been posted here, please leave a response here immediately.