Not that different from previous BMP variants.
The main diff seems the unmanned turret, if I understand correctly.
The 100mm gun seems the same as before, a low velocity hi-lo pressure thing. I didn’t know there was a missile for it but I suppose there always was one.
The three seats, side-by-side for the operating crew and the *glass cockpit [touchscreen, no less!] is a bit newer.
Not sure how they fit the forward PKM gunners with that 3-wide seating arrangement, also used in the Armata tank.
Looks like Ivan is thinking about Blue Force tracking....