https://arstechnica.com/gadgets/2019/09/the-public-release-of-ios-13-hits-september-19-but-ipados-is-coming-september-30/

CUPERTINO, Calif.—Apple's annual major public releases of iOS, iPadOS, and watchOS will arrive by the end of this month, Apple revealed on its website as it unveiled new hardware products in a live-streamed event today.

iOS 13 will hit iPhones and watchOS 6 will reach Apple Watches on September 19. iPadOS will ship a few days later on September 30. macOS Catalina is still due at an as-yet unspecified date in October.