Epic's Mark Rein has responded to the Gears of War reference in NVIDIA's ForceWare driver, stating frankly that there's no "new information" to report on the possibility of a PC port. The NVIDIA connection was simply a result of Epic providing some Gears content to NVIDIA in order to tweak the performance of Unreal Engine 3 on the company's graphics chips. Further, Rein chided, "You know console games are developed on PCs, right?"
Despite shooting down this latest rumor, Rein avoids outright denying that a version of Gears will eventually land on a Windows platform; because chances are it will.
See also: Rumor: Gears of War PC-bound?