Apple has released the third beta of macOS 15 Sequoia update, introducing new features like iPhone Mirroring support. Developers can access the beta through the System Settings app with an Apple Developer account. The update includes features like iPhone Mirroring, window tiling options, a Passwords app, Safari website summaries, and Notes features like live audio transcription and math equation support. iOS 18's Apple Intelligence features will also be integrated into macOS Sequoia later on, offering Writing Tools and an Image Playground for AI creations. New custom emoji, dubbed "Genmoji," and improved Siri functionality are also part of the update. Siri will be more adept at app interactions and understanding on-screen content requests. While developers can access macOS Sequoia now, a public beta will be available later this month for all users to test out the new features.