I just bought a Trek 1.1. The manufacturers website specifically says that it has an aluminum fork, but mine has a sticker on the fork that warns about the dangers of carbon. What's the deal?

To my untrained eye and ear it does in fact look like a carbon fiber part. It doesn't sound like aluminum when tapped and the shape looks too fluid and seamless to be aluminum. Perhaps Trek upgraded this model to a carbon fork without updating their website?

Any insights?