Apple's developer communications confirm that macOS 27 marks the end of the Rosetta 2 translation layer. Once macOS 27 is succeeded, Intel-only applications — those never rebuilt as universal or Apple silicon binaries — will stop functioning on Apple silicon hardware entirely. Apple also published a new technote on managing on-device Foundation Models context windows, and introduced a new RCSService class in TelephonyMessagingKit. For iOS and macOS developers shipping companion or helper applications that still target Intel, this notice establishes a clear end-of-life horizon. Any SDK dependency, plug-in, or third-party tool distributed as Intel-only will need a native Apple silicon build before macOS 27's successor ships. The Foundation Models context management guidance and the RCSService addition indicate ongoing platform investment in on-device AI and carrier messaging APIs.