Have a look at these MustangForums - exclusive shots of what is more than likely the 2010 Mustang GT, first covered up (note the black wheels), then in its familiar camouflage. While there are no badges visible, the massive GT fog lights are clear, even though the hood cover and large bulge looks as though it might be wearing an upgraded hood, similar to that found on the current GT500.

These give you great detail of the new headlights, and if you look closely, it appears as though it is wearing a more aggressive lower front fascia, with flares on the sides of the fascia leading up over the front wheels. Also, the lower fascia opening appears to be larger and more pronounced. This fascia could be a part of a package, similar to that found on the GT/CS, or one of the high performance variants, which could be supported by the well covered hood, but none of the current GT500 models feature the downward facing lower grille opening, or the large fog lights mounted near the headlights, so are we looking at a new, more aggressive Mustang GT, or is this part of another trimline for the 2010 model year?