From the pics, looks like the only new items are probably the needle and fluid nozzle. As stated earlier, an improved Micron will not make you a better painter, it's either in you or it 'aint. That's all there is to it. A standard Micron with V2 parts is a pretty nice combination and sufficient for anyone's needs, unless you want to paint on the head of a pin!
Regards,
Chris the cabbie