I saw this in the website's homepage of the guys
Also , an instrumental piece can be heard in the background which's actually the instrumental prelude of their new song GO !
The name of the instrumental is not mentioned on their website but I read my friend Kaede's blog & she mentioned about this briefly in Chinese & GO ! is the new song that the guys performed last Fri at Budokan during WISH03 .
I can't really comment so much about this 15 seconds instrumental of GO ! :O but all I can say's , SUPER-HI-TENSION !! sequel ? 8D