The App Store Connect documentation states:
Once your app is submitted for review and approved, you must create a new version to update the screenshots.
Is there really no way to update the app screenshots without telling existing app users that there is a new app update available? I just want to replace an incorrect screenshot in App Store, not update the app.
Is there really no way to update the app screenshots
Yep. Screenshots are part of app review so there's no way to quietly sneak in changes outside the review process.
But you don't need to literally update the app in any meaningful way. Just rebuild it from the current version's source, fix the screenshots, and give it vague release notes like Bug fixes.
As Scott said, plus: there are always some bug fixes needed. Take profit of this minor release.
