Apple is said to be planning a successor to the iPhone SE for next March, which has hitherto been referred to as the iPhone SE 2. The comparatively compact smartphone will apparently sport an iPhone 8 design, with an informed source now being cited that Apple will call it the iPhone 9.
https://www.notebookcheck.net/Apple-iPhone-SE-2-Could-Apple-s-next-US-399-budget-handset-be-launched-as-the-iPhone-9.446995.0.html