<ul><li>macOS 15.4 introduces system-wide improvements, app-specific upgrades, and support for new hardware capabilities.</li><li>Updates include mail categories in the Mail app, new emojis, enhancements to the Photos app, and improvements to Apple Intelligence and the Podcasts app.</li><li>Hardware-focused updates improve compatibility and performance, and Apple News+ adds a customizable food category.</li><li>macOS 15.4 addresses security vulnerabilities and critical bugs, while preparations are underway for the next major release, macOS 16.</li></ul>

macOS 15.4: Your Definitive Overview of What’s New

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