Back in January, the new F15 BMW X5 leaked on the interwebs way ahead of its Spring unveil. Despite the accidental leak, BMW continues to hide the design of the new X5 under light camouflage while testing several prototypes in Germany and at their U.S. plant in South Carolina.

New photos captured by spy photographer Palbay gives us a look at the proportions and somewhat the design of the new F15 X5 in relation to the outgoing model, E70 X5.

The two photos shown below were shot at just about the same location, elevation and distance from the camera so therefore they are very close in scale.

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At a first glance, we can see the larger front overhangs on the F15 (Euro Pedestrian Safety Regulations) and the overall sleeker greenhouse on the F15. The doors look shorter (top to bottom) on the F15 vs E70. The E70 is looking a little boxy now compared to the F15.

At the front, the fascia incorporates a more dominating grille with thicker slats and a wider design. The grille’s design includes the transition from kidneys to the headlights, similar to the one seen on the recently launched F30 3 Series sedan.

The third-generation F15 X5 uses the car architecture from the 5 Series which will make a significant contribution to weight reduction of more than 100 kilograms – despite its larger dimensions.

We expect the new F15 BMW X5 to make its debut at the 2013 New York Auto Show.