macOS 27
macOS 27 on macOS 27
NotNotch is meant to run macOS 27 on macOS 27 (Darwin 27) while still supporting macOS 14. NotNotch keeps a macOS 14 deployment floor and is intended to run on macOS 27 without raising the minimum to 27.
Last updated 2027-07-14
Runtime vs SDK
Local builds may still use the macOS 26 SDK in Xcode 26. The goal is a clean run on macOS 27, not a 27-only app.
What stays the same
macOS 27 should keep the same user-facing behavior. NotNotch keeps a macOS 14 deployment floor and is intended to run on macOS 27 without raising the minimum to 27.