In the latest episode of The Talk Show, famed Apple pundit John Gruber mentions that he’s heard “from a birdie of a birdie” that Apple is working on the “biggest camera jump ever” for the next iPhone, as first noted by The Tech Block.
He's heard little in terms of camera features aside from a brief mention of a “weird two-lens system” that should take the next iPhone's camera into “DSLR quality imagery,” those are Gruber's exact words.
Apple's been using a five-element lens design for iPhone back cameras since the 2011 introduction of the iPhone 4s.