Quakecon 2011 kicked off yesterday, and included another of John Carmack's traditional incredibly long and bewilderingly technical talks, delivered at an audience primarily there to repeatedly frag each other but prepared to sit through all this talk of doohickeys and megawotsits due to their sheer love and respect for the godfather of FPS. If they were also primarily there in the hope of Doom 4 being unveiled at last, they were disappointed. Carmack made it clear that 2011 is all about Rage - which, all of a sudden, is due for release in two months.
Soon after that, he revealed, id will release Doom 3's source code to the world.
Which will presumably put the still not inconsiderable clout of id Tech 4 into anyone's hands - what a gift that should be to modders, indies and small devs alike. Id's owners Bethesda/ZeniMax have approved this, apparently just leaving a few legal hoops to jump before it can happen.
id has a happy tradition of doing this sort of thing - they made the Quake III source available to the world a few years back too.
Good work, Mr Carmack. Now, back to your megatextures with you.