OmniVision may have given signs of a large jump in iPhone 3GS production today through a leak of its production demands. Best known for making the 3.2-megapixel camera inside the Apple handset, the mini-camera designer is warning its other customers that supply will be tight until at least late November as Apple is consuming much of its stock. Other sources for DigiTimes add that iPhone 3GS orders for the holidays may have increased by as much as 17 to 20 percent.