Appcast v1.0.0

New Features

Appcast v1.0.0 supports the same features as the Sparkle v2.9 implementation.

Changes

• Added support for <sparkle:minimumUpdateVersion>
• Added support for <sparkle:hardwareRequirements>, including Apple silicon requirements
• Added automatic Apple silicon inference for updates requiring macOS 27 or newer
• Added installation type parsing and validation
• Added signed appcast validation status and safe fallback behavior
• Preserved custom appcast element values through SUAppcastItem.propertiesDictionary

Improved Delta Updates

• Added support for delta executable-size and locale metadata
• Improved delta update selection
• Delta updates now inherit the required metadata and resolved state from their parent item

Compatibility Improvements

• Aligned SUStandardVersionComparator behavior with Sparkle
• Aligned phased rollout and skipped-update handling with Sparkle
• Improved critical and informational update handling
• Improved parsing of release-notes links, descriptions, version numbers, and installation types
• Added support for Ed25519 and DSA signature parsing with explicit validation status

Build and Maintenance

• Added CI coverage for Swift 5.10, Swift 6.1, and Swift 6.3
• Updated the build environment to Xcode 26.6
• Expanded unit and Sparkle compatibility test coverage

Full Changelog: 0.6.0...1.0.0