If you look at the top bar of the official
Left 4 Dead website, you'll notice a link to Facebook. Clicking that will bring you to Ted Carson's (Valve developer)
facebook page that features an image that resembles
old L4D art, but without the pinky, making it a hand with only
three distinct fingers.. For those unfamiliar with the series, the boxart for L4D2 features a
decaying hand with two fingers.
The background image was uploaded around 20 hours ago or so. Additionally, Ted Carson is a longtime Valve developer and
was leaked as a L4D3 developer as well. Something fishy is definitely going on.