Starting April 28, 2026, you must use Xcode 26 for App Store submissions. This version introduces new platform SDKs, including iOS SDK 26 and iPadOS SDK 26, designed to improve on-device LLM performance with the Foundation Modules framework. Swift 6.2 and macOS Sequoia 15.4 or later are required. Notable AI features include on-device integration with the cloud and ChatGPT, text summarization, entity extraction, and privacy-focused local inference.
Key Requirements and Features
- From April 28, 2026, all apps must be built with Xcode 26 and the latest platform SDKs, including iOS SDK 26 and macOS SDK 26. This requirement aligns with new local LLM features and the updated development workflow.
- The new APIs let you run large language models locally, reducing reliance on cloud inference.
- Xcode 26 loads workspaces 40% faster and has better compilation caching.
- AI-powered tools in Xcode 26 automate inline code generation to accelerate development, generate documentation to improve code clarity, and fix bugs faster. This reduces manual work, letting developers focus on higher-level tasks and boosting overall productivity.
- You will need a Mac with Apple Silicon running macOS 15.4 or later.
Development Workflow Changes
- To add on-device text generation, use the Language Model Session and always check the model’s availability before processing. Profile app uses the Foundation Models framework and tracks CPU with new tools.
- New tools help you profile the Foundation Modules framework usage and monitor CPU usage in your app.
- Always check model availability before starting on-device processing.
Xcode 26 comes with Swift 6.2 and SDKs for:
- iOS 26
- iPadOS 26
- tvOS 26
- watchOS 8 or later
- macOS Tahoe 26
- visionOS 26
You can debug directly on devices running iOS 15 or later, tvOS 15 or later, watchOS 8 or later, and visionOS. To use Xcode 26, your Mac must run macOS Sequoia 15.6 or later. You can debug directly on devices running iOS 15 or later, tvOS 15 or later, watchOS 8 or later, and visionOS. To use Xcode 26, your Mac needs to run macOS Sequoia 15.6 or newer.
Xcode 26 provides advanced coding intelligence tools to streamline writing code, building tests and documentation, debugging, refactoring, and navigating projects. It supports integration with ChatGPT and cloud accounts, allows the use of custom API keys with providers that implement the chat completions of API, and offers local model operations on Macs with Apple Silicon.
- Use the Coding Assistant to interact with code using natural language, featuring context awareness and conversation history.
- Generate documentation, explain code, preview changes, and create playgrounds within the code editor.
- Enhanced predictive code completion runs faster and leverages deeper code context on your Mac, resulting in more accurate and efficient suggestions that help speed up the coding process.
Also in Xcode 26
- The #Playground macro enables interactive debugging and code exploration in the preview panel, letting you test concepts, debug in real time, and make immediate adjustments to code logic.
- Icon Composer simplifies icon creation from a single design file, letting you adjust depth and dynamic lighting and customize default dark and mono modes, which speeds up design iteration and ensures consistency across app icons.
- Redesigned tabs improve project navigation, with in-tab navigation and file pinning to keep key files visible. This makes it easier to quickly access important code segments, improving workflow and reducing context switching.
- Compilation caching reduces build times, especially when switching branches or performing clean builds, helping developers iterate faster and deliver updates more quickly.
- New Instruments Enhance App Analysis, Processor Trace Records All Function Calls, Swift UI Profiler Analyzers View Updates, Power Profiler Tracks Battery and Thermal Impact, and CPU Counters, Identify Performance Bottlenecks
- Swift concurrency debugging monitors async functions and threads, showing clear taps and properties.
- String catalogs help with localization via tax-safe Swift symbols, string references, auto-compute support, and on-device AI-generated explanatory comments.
- Voice control enables accurate Swift code dictation, recognizing syntax and automatically formatting code.
New Features
Hang and launch diagnostics now offer trending insights marked with a flame icon, making it easier to spot and prioritize performance issues.
A new setting now controls how function names appear in C++ frames: Plugin.cpp.display.function-name-format.
By default, the full function name shows, but you can include parts of the signature. For more, see http://les.idb.ibm.org/use/formatting.html#function-name-formats.
LLDB now highlights C++ function base names by default in backtraces, helping you identify core functions.
Source: Xcode 26 Release Notes
