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Taiwan only had a three-day work week this week, so I started compiling the weekly newsletter content a bit later, and now the week is ending, haha.
Apple just released 26.1 beta 2 for all platforms. Both TestFlight and App Store Connect apps have also been updated to the Liquid Glass version (though the Apple Developer app hasn’t yet)
13 on October 8, 2025
➕13+ Recent Content Updates
The 13+ column continues its challenge of daily weekday updates. Welcome to join if you’d like to receive daily doses of development knowledge and thought stimulation.
⚡️Exploring iPhone USB Speed Impact on Development Experience: Research Strategy and Conclusion Series finale
🤖Using AI More Efficiently and Cleverly—My Current AI Tools Usage (September 2025) After understanding my needs and tool purposes, significantly reduced costs
🔄Easily Sync Cursor and VS Code Settings Across Devices Without Packages Simple concept, highly practical
🤖If the Reader of This Article is AI... Previous article, a reader directly gave it to Claude Code for one-time setup, giving me new inspiration
💡Quick Knowledge: Apple Device UDID Assembly Rules You can tell what SoC it is from the ID
🪟Super Useful Tips for Managing SwiftUI Preview Windows Did you know? Preview can simultaneously display multiple devices, even multiple platforms, like iPhone, iPad, and Apple Watch
🧪Apple Releases
iPadOS 26.1 beta 2 (23B5059e) This version restored Slide Over functionality
TestFlight 4.0 Reportedly has a new feature “Tester Matching,” which can “discover apps worth testing based on your interests.” However, no visible effects yet
AppMigrationKit Brand new API in iOS 26.1. Documentation is still incomplete, but the purpose is to copy data from the same app on other non-Apple platforms (e.g., Android) to the iOS app
📊 Introducing Swift Profile Recorder: Identifying Performance Bottlenecks in Production
Apple open-sourced Swift Profile Recorder, which allows understanding Swift app performance without special system privileges.
You can collect log files through curl. It supports multiple industry-standard formats and can integrate with existing visualization and analysis tools.
🔒 Secure your app with Memory Integrity Enforcement | Meet with Apple
The A19 chip series has a new memory security feature. If your app is of a type that’s easily attacked (e.g., messaging, social, browser), you can enable Hardware Memory Tagging in Xcode 26 to detect potential issues.
🎵James Dempsey’s New Song Liquid Glass
Senior engineer James Dempsey has written and performed many songs using various Apple technologies. This is his latest.
The intentionally incomprehensible lyrics are deliberate. Why? Just like when Liquid Glass first launched, there were some issues with text being unclear.
💼The Underdogs: BSOD (Blue Screen of Death) | Apple at Work
After years, Apple at Work has released a new commercial. This time it’s about Windows’ blue screen of death. Over 8 minutes long, but just as lively and entertaining as always.
📱How iPhone 4 “Fixed” Antennagate
Developer @samhenrigold dug into how Apple fixed “Antennagate”—the signal degradation caused by touching the iPhone 4 antenna seam with your finger.
The answer might be much simpler than you think. From iOS 4 to 4.0.1, they modified 20 bytes and “fixed it.”
↖️Last Issue Highlights
If you’ve been too busy to read last week’s content, here are the highlights:
🤖Code Along with Foundation Models Apple released the latest Foundation Models tutorial video
🚀Swift Transformers 1.0 Hugging Face officially released, making it easier for developers to use local AI models on Apple platforms
🛠️Swift Configuration Swift officially introduces a new solution for managing settings and environments
That’s all for this week’s Apple Developer Weekly. Feel free to like❤️, comment💬, or reply✉️ to share your thoughts.
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