You can see the eye sockets in the new (I say practical) alien in the tv spot, and if you go back to the trailer with the alien hanging underneath the dropship at the end of the last trailer, the front area of the carapace is translucent and the light is coming through it, with the rest of the head dark because the head fills the carapace - ie the eye sockets/nose are there, as the original Big Chap.