QuakeCon went by and i didn't even know sigh :(
Id announced their new game Rage. It runs on Mac, PC, XBox 360 and PS3 from the same source base. The major technical feature is MegaTexture where artists now don't need to worry about the texture size and they can make surface as detailed as they want without performance hit.
The major announcement for me was that Quake 3 is going to be made a web game. It's called Quake Zero. Anyone will be able to connect to internet, download Quake Zero client(?) and start playing online for free. They will use advertisement business model. Id is now split into two teams and one team is doing this work. The other team is working on Rage.
You can download the keynote from here.