According to a conversation over on the official message board for H.A.W.X. 2, it looks as though the PC version of the game has been delayed yet again.
Last month, Ubisoft noted in its release schedule H.A.W.X. 2 would be delayed on PC until October 1, but according to discussions on the game's forums, those who pre-ordered the game claim to have received emails denoting the new release date.
The game, which was previously set for release on September 30 in the US, is now also listed on Steam as a "fall 2010" release.
We'll send Ubisoft a mail and see what we can find out.
H.A.W.X.2 is already out on PS3 and Xbox 360.