It's going to be live-streamed! Sugizo just posted this:
X JAPAN Media News
X JAPAN's act at Yokohama Arena will be live-streamed!
X JAPAN横浜アリーナ公演の生中継が決定しました!
WOWOW Prime "X JAPAN WORLD TOUR 2014 at YOKOHAMA ARENA"
WOWOW プライム「生中継! X JAPAN WORLD TOUR 2014 at YOKOHAMA ARENA」
2014/10/1(Wed) 19:00 ~
http://www.wowow.co.jp/music/xjapan/I'm assuming that it's for pay, but I'm sure someone out there will be live-streaming that stream, and it'll more than likely be on YouTube and the like almost immediately afterwards. Can never complain about more pro shot X Japan shows!