Will IOS 27 change the iPhone Home Screen?

Probably not something anyone can confirm yet. Apple has not announced any official Home Screen changes for iOS 27.

Because iOS 27 is many versions away, any specific prediction would be speculation. Apple could change the Home Screen in a future release, but there’s no confirmed information yet.

A safer way to think about it is: maybe, but nothing is official. Check Apple’s announcements closer to the release for the real details.