Got my boxset on Saturday.
In addition to parts that Solscud previously mentioned,
the anime scene by Production I.G. was also a different cut than the American Theatrical Release.
Extra frames of O-Ren's dad slamming a dude's face into the wall, and more violent and bloody scenes of O-Ren impaling Boss Matsumoto.
What's kinda funny about this boxset is, if you put the DVD in the Jumpsuit case and open the shirt, the Hanzo Sword and Kubrick, there's really nothing left to keep in the big Box.
Guess we'll have to wait and see if Vol. 2 gets the same treatment as this one.
Otherwise I'm putting Vol 2 in box with Vol 1.