FSKit updates

Overview

Browse notable changes in FSKit.

June 2026

• Update your FSVolume implementations to adopt FSVolume.Handler and the related “handler” protocols, which replace the now-deprecated FSVolume.Operations and other “operations” protocols. The “Handler” protocols provide richer FSVolumeHandlerResult subtypes to pass back to the framework after each call completes. Some calls also provide an FSContext parameter which contains user and group identifiers. You can use these to restrict access to your filesystem to known callers.

• Improve performance with kernel data caching, by conforming to the FSVolume.DataCacheHandler protocol.

See Also

Technology and frameworks

• Accelerate updates
• Accessibility updates
• ActivityKit updates
• AdAttributionKit Updates
• App Clips updates
• App Intents updates
• AppKit updates
• Apple Intelligence updates
• AppleMapsServerAPI Updates
• Apple Pencil updates
• ARKit updates
• Audio Toolbox updates
• AuthenticationServices updates
• AVFAudio updates
• AVFoundation updates