What is new for mac os

Writing Tools: macOS now includes advanced writing tools that help with spelling, grammar, structure, clarity, and tone. These features are integrated system-wide and can be adopted by your apps automatically.
Genmoji and Image Playground: These new features can be integrated into your apps to create engaging experiences.
Productivity Enhancements: Easier window tiling and iPhone mirroring are introduced to improve productivity.
New APIs: Includes user space file system support and major improvements to MapKit.

SwiftUI Integration: Enhanced support for SwiftUI, including new menu and animation APIs.
System Standard Components: New components like content type pickers, cursors, and text entry suggestions.
Window Tiling: New features to manage window panes and ensure your app's windows are ready to be cleaned and tidied.
Keyboard Context Menus: Improved keyboard navigation with context menus.
Toolbar Support: Ensure your toolbars support all display modes.

Extensions Transparency and Control: All extensions for your app now live in one place in macOS system settings, making it easier to understand and control if and when your app is running.
App Group Data Container Protection: Brings the protections of sandboxing to both groups of apps and apps that aren't ready to sandbox all of their data yet.

Generative Tools: New features for creating language and images in apps, along with major updates to Siri.
Gaming: With advancements in Metal and Apple silicon, macOS now supports console-class gaming experiences.

For more detailed information, you can refer to the following sessions: