The Grinch Doctor wrote:
Quite right. Just imagine the "public outrage" if they did advertise it as a Alien prequel and it didn't feature any xenomorphs.
While I absolutely 100% agree with this, I can see how people are getting confused. The marketing so far has been about as subtle as a sledgehammer when it comes to highlighting the 'Alien' links. The trailer even has what sounds just like that same weird screech that was all over the original 'Alien' trailers.