4Chan, that oh-so reliable place on the Internet, has played host to a stack of alleged Doom 4 concept art pieces that actually do look like they could have emerged from within id's databanks, but they also came accompanied with yet another claim the game had been cancelled.
DOOM4 Canceled, more at 11!Joystiq
then contacted Bethesda for a statement where head of marketing and PR, Pete Hines, told them "DOOM 4 isn't cancelled", and that when they're "ready to talk about it and show it off" they would "let everyone know". This isn't the first time the game has been declared dead in the water, but each and every time Bethesda refutes any such cancellation and reiterates that it is still very much in production.
So, as usual, take everything here with a grain of salt, especially the accompanying leaked screens, but as mentioned earlier in the post, they do look well megatextured and in league with id's last effort, RAGE.