Sugizo updated his website after he confirmed himself as 6th member,but I found it's kinda weird cause he wrote in website description as guitarist of Luna Sea only.
<meta name="description" content="SUGIZO Official WEB Site , the guitarist of Luna Sea.">
<meta name="keywords" content="SUGIZO,sugizo,スギゾー,Sephirot,Luna Sea,X JAPAN">
meta description will show up when you search in seach engine,like this
meta keywords would not show up in search engine and website description,but these keywords will help increase traffic to a website.
and my japanese sucks,cause I only use google translate tool,but in his profile he also still called himself support guitarist of X Japan
10年振りに復活した「X JAPAN」へサポート・ギタリストとして参加する等、多岐に渉って世界規模で活動中。
http://www.sugizo.com/what a weird one,lol