initial d stage 4 is out?

[initial s14]

i have seen initial d and there is no way i could remember that i have seen or rented a disc with vol.4 written on the its cd case. i know there were 2 boxes with 3 cases in each numbering from vol.1 to 3 and there were these battle stage, extra stage and the movie version. is this the 4th one weve been waiting for? is this the part were project d battles integ R, ek9 R, miata and R34 skyline? oh plus that bunta race in an impreza? what are  your thoughts? box says its still part of stage 2.. hmm have i missed something here? this 1 disc costs  79 bucks and only plays on region 2.

site address: www.geocities.com/mr2pogi/initiald4.html