NSProgressIndicator can take a Task.progress binding
New .automatic NSButton bezel style
Button bezel styles renamed from appearance to usage
Inspectors, new sidebars like the Xcode right bar
Back compatible to Big Sur
Add .toggleInspector to split view toolbar items
Popovers can anchor to toolbar items
Menus
Menus were rewritten for cocoa instead of carbon
New section headers
Pallet menus, basically a compact menu of icons
Select any / select one
Should have the same target action pair
Menu badges, with strings, counts and labeled counts
Cooperative app activation
Activate is now a request instead of a command
ignoringOtherApps: param is deprecated and ignored
Yield api can be used from the current active app to pick the next active app. This just allows the other apps activation request to succeed.
Graphics
NSBezierPath and CGPath have a conversion helper
CADisplayLink on macOS, to sync to display refresh rate
New gray system background fill colors
Most views no longer clip to their bounds. So drawing can occur outside. Visible rect might extend outside band. dirtyRect is not contsrained by the bounds.
Text improvements
Symbol effects: bounce, transitions, pulse, etc
Locale aware symbols and images
Insertion indicator adapts to accent color
Cursor accessory shows caps lock, etc
Locale aware line breaking for morphemes
Swift and SwiftUI
Appropriate appkit classes marked as sendable and transferable
@ViewLoading property wrapper
Previews for AppKit views
HostingView improvements for bridging scenes and modifiers between the drawing stacks