MacRumors published a story that Apple has released the first betas of iOS 16.4 and iPadOS 16.4 to registered developers.
Apple Seeds First Betas of iOS 16.4 and iPadOS 16.4 to Developers
Apple today seeded the first betas of upcoming iOS 16.4 and iPadOS 16.4 updates to developers for testing purposes, with the software coming three weeks after the launch of iOS 16.3 and iPadOS 16.3.
Apple Seeds First Betas of iOS 16.4 and iPadOS 16.4 to Developers
Developers are able to download the iOS 16.4 and iPadOS 16.4 profiles from the Apple Developer Center, and once installed, the beta software will be available over the air.