Bethesda PR and marketing VP Pete Hines has confirmed that Prey 2 won't be using id Tech 5.
The sequel was announced yesterday by the company for PC, 360 and PS3, with the press release confirming the game would be made using "the cutting edge id tech engine from id Software."
But Hines has told IGN that it's not using the latest version of the tech that's currently being used by id for RAGE.
"This game has been in development for quite a while and id Tech 5 is still in progress (until Rage ships, and probably even after). So it really wasn't an option," he told the site.
Previously, id had licensed out id tech to licensees when it was an independent entity. But after being bought by Bethesda parent ZeniMax in 2009, id CEO Todd Hollenshead confirmed at QuakeCon last August that the engine would now be used within the Bethesda group, including games just being published by the company.
Game's out in 2012.