Doom 4 - everything there is to know
Published on
Eurogamer's put together a hodgepodge of Doom 4 bits from various interviews at QuakeCon, including info that the game may use some of Quake Live's infrastructure, that it will be built so the single-player doesn't allow the gamer to become "p**sed off at the game," and plenty more.
Read it. You don't have anything better to do.