There are some Kasugai 50 danisen matches on the stream archive. Prince (CH), Star (BX), Batayan (GU), etc.
UPDATE: Team battle from Tuesday. Good stuff from Nakamura.
This weekend's Gamer's Vision contest will serve as a pre X-Mania event. Live broadcast here August 7th at 8pm (Japan.) Aka Zangief has the poster.
X-Mania 2010 in Two Weeks
X-Mania 11 is scheduled for August 15th at noon. Rules are the same as SBO except duplicate characters are allowed. There's a warm-up tourney the night before with a special edition of Mattsun's X-Mania Archives series. He wrote that the main event will feature a surprise unheard of in fighting game history. If I see news about a live broadcast, I'll post.