This is the new version of 24-70mm f/2.8E ED VR that now incorporates Vibration Reduction. You'll also find that this lens has a new optical design developed to combat chromatic aberrations, and that the autofocus speed has also been improved (by around 1.5x compared to the older 24-70mm) using Nikon's Silent Wave Motor.
In addition to the optical design being updated, you'll also find that Nikon have strengthened the whole construction of this lens to be able to withistand the punishment it might be exposed to over the years of use it would bring. The lens is fully weather sealed to repel water, dust and dirt.