A source in Apple's supply chain has confirmed that its next-generation iPhone 6s and iPhone 6s Plus will boast a 12-megapixel rear-facing iSight camera, according to a new report. It will be the first time Apple has moved beyond an 8-megapixel sensor since the iPhone 4s.

"Apple is currently ordering suppliers to produce five-element lenses for the iPhone 6S that are designed to work with 12-megapixel camera sensors," the source told Business Insider. "These components are said to be in the mass production stage and are on schedule."

Multiple reports have promised a 12-megapixel sensor for Apple's next smartphones, which would be a big upgrade over the 8-megapixel cameras currently shipping inside the iPhone 6 and 6 Plus. One analyst warned, however, that the new camera would deliver smaller pixels.

That's usually regarded as a negative, but we shouldn't let it concern us too much at this stage. Apple will almost certainly ensure that the camera is a significant improvement over its existing iSight sensors, which already take impressive photos.

Apple's new lenses, which are said to be made up of five elements, will be made of "high-quality plastic" and are expected to cost as little as $1 to produce. Business Insider adds that Apple is also building six-element lenses for next year's iPhone 7.