Apple has released a support document for iOS 27, iPadOS 27, and more, warning of a significant network security change in the coming months. The new requirements will be implemented in iOS 27 and macOS 27, which will be revealed at the WWDC 2026 kickoff. The document warns of potential issues with server connections that may not meet the requirements, and requires an audit to identify servers that don't meet the required requirements. It also provides instructions on how to test for potential connection errors and adjust for the expected release date for these new software versions.