Like the Ram, big changes are afoot at the front of the Silverado. While it's still heavily camouflaged, there are some very distinct LED accents shining through. They look to make a slight "Z" shape, with white lights up top and turn signals below. The grille appears to have two bars with a large bowtie in the center, though that of course is completely hidden.
Out back, the bumper appears to have cutouts for rear-facing dual exhaust. This is something Ram has been doing for a while, so it will be interesting to see how Chevy fans react. Not much else can be gleaned, though it seems development is fairly far along. Look for a full reveal sometime in the next year.