a lot of that is done with the shift in driveline power. instead of the usual 40/60% front/rear bias, they're moving more toward a RWD vehicle, with the AWD function available. i don't know what the final numbers will be, but that'll definitely be an improvement in handling.
'12 X3 XDrive 35i
'13 335i MSport
Past - '06 330xi, '07 X3 3.0si, '09 328i