The new property id Software executives have repeated hinted towards is named Rage, co-founder and programmer John Carmack revealed at today's QuakeCon festivities.
"Everybody knows we're going to do a good job with the run and gun action stuff...but we are branching out," explained Carmack, who noted id's love for Road Warrior-esque atmosphere.
Speaking to a small collection of game journalists, Hollenshead explained that Rage was a deliberate departure from the corridor shooters that made id famous. Its gameplay will be "60 percent shooting and 40 percent driving" between villages in a postapocalyptic wasteland. Its setting will be a far future which has seen civilization decimated after a comet smashes into the Earth. Players will aid the villages' inhabitants in fighting both an oppressive regime and various mutants and monsters roaming the wasteland.
See the GameSpot link below for more details.