This year's iPhone XR to sport telephoto lens
A report coming from a Chinese supply chain claims that the successor of the iPhone XR will borrow one of iPhone XS and XS Max key features - the 2x optical zoom.
Unfortunately, there's not a lot of info regarding the camera setup but it's believed that there won't be any major upgrades. It will still be a 2x optical zoom achieved by a dual-camera module and will most likely be the same as on the current iPhone XS and XS Max - 12MP primary camera paired with a 12MP telephoto lens.
It only makes sense as Apple will re-use the already available sensors in stock to keep the costs as low as possible. But there will be a significant upgrade to the front-facing camera, though. The current 7MP sensor will be swapped out for a 12MP unit.
Of course, nothing is solid as there's still a long way to go until the next generation of iPhones is released, but it sounds pretty plausible. And the report comes from a fairly reliable source too.