Looks like HMV Japan Site has just updated some text relating to this DVD release.
Most interesting bit is that it says we will have a Budapest Documentary on disc 2.
I guess this is going to be the stuff that DoRo recorded, at least I think it was DoRo.
No hints at any other extras though yet or even the length of the Documentary.
See HMV listing : http://www.hmv.co.jp/product/detail.asp?sku=1403788