Even though the official release of the iPhone 15 Pro is likely more than 18 months away, various analysts have already offered their speculations regarding a possible camera upgrade of Apple's flagship smartphone, which could supposedly feature a periscope lens capable of a 10x optical zoom.
https://www.notebookcheck.net/Rumor-Apple-s-iPhone-15-Pro-could-get-a-major-camera-upgrade-with-10x-optical-zoom.589648.0.html