Id have announced Doom 4. In the most subtle way possible.

While most studios would scream on the top of their voices and set fire to most of the internet with a rousing press conference, the confirmation of a fourth Doom game has been made via a help-wanted ad, with the company looking to hire some talent to make that fourth jaunt into the bowels of Hell possible.

Though the formats have not been divulged, you can bet your very last paise for a PC release.

Source: IGN.