- Oct 9, 2026 Core AI vs Core ML in October 2026: Run Both, Don't Migrate Yet Apple's new Core AI framework looks like Core ML's replacement, but the most detailed public migration shipped it as an opt-in and kept Core ML as the default. The comparison, the iPhone 17 Pro numbers, a dual-backend architecture, the beta pitfalls, and the criteria for flipping the default.
- Oct 1, 2026 Foundation Models in iOS 27: What a 4K Context Window Means for Your Architecture Apple's on-device model has a 4K-token context window, and Private Cloud Compute raises that to 32K but needs a network and has a daily quota. What belongs on-device, what goes to PCC, and how to design the handoff so it degrades instead of breaks.
- Sep 23, 2026 Xcode's Project File Is Becoming JSON: What project.xcproj Changes for iOS Teams Xcode 27.2 beta adds a JSON-based project format, project.xcproj, alongside the twenty-year-old project.pbxproj. What actually changed, why merge conflicts are the real reason, and what it means for CI scripts and tools like XcodeProj, CocoaPods and fastlane.
- Sep 19, 2026 iPhone Duo Simulator Is Here: The Developer Checklist from Apple's Own Sessions Xcode 27.1 beta adds the iPhone Duo Simulator five weeks before the device ships. Everything Apple says an iOS app needs to take care of, from size classes and vertical bars to the hinge, scenes and cameras, with the sessions, Q&As and workshops that cover each part.
- Sep 11, 2026 iPhone Duo: Auditing an Existing App Before Simulator Support Ships Apple opened developer resources for iPhone Duo ahead of its October release, but Simulator support doesn't land until Xcode 27.1 beta. Here's the API surface I'm checking existing apps against today, sourced from Apple's own documentation, not guesswork.
- Sep 9, 2026 Apple's September 9 Event: New Hardware, a Bigger AI Push, and What It Means for Developers iPhone Duo, iPhone 18 Pro, Apple Watch Series 12, AirPods 5, iOS 27, and Siri AI rolling out in beta, all landed the same day. Here's what shipped, where Apple Intelligence actually fits in, and the concrete list of what I'm checking across our apps before any of it reaches users.