Polygon.com has written an article covering this in more detail.
Saturday, 3 August 2013
Doom 4 latest news
So we have Quakecon getting closer to its finish and there was John Carmack`s highly awaited keynote as every year for many expecting to hear or even see something new about Doom 4. As probably one of the biggest dissapointment, Carmack could not say anything and so was eveyone else from ID or Bethesda, like Tim Willits or Pete Hines. There was only assurance for Doom fans, that the game is deep in its development and announcement about hiring art director Hugo Martin, who recently worked on designing Jeager huge robot machines for Pacific Rim.