There actually is a separate DVD-release for the CG-enhanced version of Ghost in the Shell, aptly named Ghost in the Shell 2.0 (it’s more like thank you, anything that’s ever been reworked is now 2.0, please move on). The original Japanese version is released on the 19th of December via amazon.jp and here’s the pre-order link for it, in case you need it. (I do need it, I’ve just pre-ordered one.)