Apple announced Xcode 27 at WWDC 2026 on June 8, and it is the biggest shift to the Apple developer workflow since AI assistance arrived in Xcode 26. The headline is Xcode agentic coding: coding agents from Anthropic, OpenAI and Google can now plan, write, test and preview code inside Xcode itself. Add a new Device Hub that replaces the Simulator, an Apple Silicon-only build that is 30% smaller, and a faster Xcode Cloud, and there is plenty to plan for before iOS 27 ships to your users.
This guide covers what is new in Xcode 27, how it compares with Xcode 26, what Liquid Glass means for your apps, and how to upgrade safely.
Xcode 27 at a Glance
Here are the changes that matter most for iOS, macOS and multiplatform teams:
- Agentic coding with models and tools from Anthropic, OpenAI and Google built into the editor.
- Device Hub, a single place for virtual and physical devices, replacing the Simulator.
- Apple Silicon only, which makes the download about 30% smaller.
- Xcode Cloud builds up to 2x faster, now with support for Metal apps and visionOS builds.
- A customizable toolbar and a new theme system to personalize the editor.
- Resizable previews and simulators for testing layouts across sizes.
- Swift 6.4, new SwiftUI and SwiftData APIs, plus new on-device intelligence frameworks.
Agentic Coding in Xcode 27: Claude, Gemini and OpenAI
Xcode 26 added a built-in AI assistant with ChatGPT as the default model. Xcode 27 goes a step further. Apple is working with the leading model providers to bring their agents into Xcode, so you can choose between Anthropic’s Claude, Google’s Gemini and OpenAI directly in your workflow. If you have been searching for Claude in Xcode, this is where it lives.
According to Apple, agents in Xcode can help with:
- Planning a feature and answering multi-turn questions about your project
- Making code changes across files
- Running and reading previews
- Writing and running tests
- Creating Playgrounds
- Interacting with devices through Device Hub
Xcode 27 also ships with specialist knowledge from Apple’s engineers and designers, covering SwiftUI, accessibility, sizing, testing and performance, which agents can draw on. You can extend Xcode as well, so the setup can fit how your team already works.
Our advice: treat agents as fast junior pair programmers. Let them draft views, tests and refactors, but keep code review, architecture decisions and security checks with your engineers.
Xcode Device Hub: The Simulator Replacement
The Xcode Device Hub is the most visible interface change. It replaces the old Simulator and brings virtual and physical devices together in one window. Apple describes the experience as similar to iPhone Mirroring, and the window can be freely resized.
Why it matters:
- You can test across screen sizes without juggling separate simulator windows.
- Real devices and simulators are handled in the same place, which shortens the test loop.
- Coding agents can interact with devices through the Hub, so agent-driven testing becomes practical.
If your team has scripts or documentation that mention the Simulator, plan time to update them.
Apple Silicon Only, 30% Smaller
Xcode 27 runs only on Apple Silicon Macs, and that change is what makes the app roughly 30% smaller. For most teams this is a welcome saving. If anyone on your team still builds on an Intel Mac, they will need to stay on an earlier Xcode or upgrade hardware, and your CI machines need the same check.
Personalization also improves. Xcode 27 offers a fully customizable toolbar and a theme system that changes the look of the whole editor, including per-project themes.
Faster Builds with Xcode Cloud
Apple says Xcode Cloud builds are up to twice as fast in Xcode 27, and the service now supports Metal-based apps and visionOS builds. For small teams, that means shorter feedback loops without managing your own build servers. If you are weighing Xcode Cloud against other CI options, run the same pipeline on both for a week and compare build time and cost.
Liquid Glass and iOS 27: What Developers Need to Test
Liquid Glass arrived with iOS 26 and is refined in iOS 27, with a transparency control and better legibility over busy backgrounds. The change developers should notice is that apps recompiled with Xcode 27 are reported to adopt the new design automatically, and SwiftUI apps pick it up on the 27 releases.
Before you ship an update built with Xcode 27, we recommend you:
- Test every screen on the iOS 27 beta, especially custom navigation bars, tab bars and overlays.
- Check text contrast on translucent surfaces and with the transparency slider changed.
- Review app icons, since Icon Composer now offers refraction effects.
- Use the resizable previews in Xcode 27 to catch layout problems early.
What’s New in Swift and SwiftUI
The language and UI frameworks moved forward too:
- Swift 6.4 and a new availability style that targets all 27 operating systems at once.
- SwiftUI gains
reorderable()andreorderContainer(for:)modifiers for reordering collections. - SwiftData adds a
sectionByparameter so you can section fetched results. - Core AI is a new framework for running on-device models in your apps.
- View Annotations API lets Siri act on what is on screen when people ask.
- Foundation Models gain support for Gemini, widening the choice of models for in-app AI.
Xcode 26 vs Xcode 27
| Area | Xcode 26 (WWDC 2025) | Xcode 27 (WWDC 2026) |
|---|---|---|
| AI in the editor | Built-in assistant, ChatGPT by default, other models by API key or local | Agentic coding with Anthropic, OpenAI and Google agents |
| Testing devices | Simulator | Device Hub (virtual and physical devices together) |
| Mac support | Previous requirements | Apple Silicon only, about 30% smaller |
| Xcode Cloud | Cloud builds and parallel tests | Up to 2x faster, plus Metal and visionOS builds |
| Editor look | Standard layout | Customizable toolbar and per-project themes |
| Design language | Liquid Glass introduced | Liquid Glass refined, new look adopted on recompile |
What Is the Latest Xcode Version?
The newest major release is Xcode 27, first made available as a developer beta on June 8, 2026 together with the iOS 27, iPadOS 27, macOS 27, watchOS 27, tvOS 27 and visionOS 27 betas. Point releases and release candidates arrive through the year, so always check the Apple Developer downloads page for the current version of Xcode before you install.
How to Upgrade to Xcode 27
- Check your hardware. Confirm every developer and CI Mac runs Apple Silicon.
- Back up and branch. Keep a working Xcode 26 install and a clean branch for the migration.
- Install the new Xcode from the Mac App Store or the Apple Developer downloads page.
- Build and fix warnings. Resolve deprecations before you touch new features.
- Test on iOS 27. Run your regression suite in Device Hub on both simulators and real devices.
- Review Liquid Glass. Walk through each screen and fix contrast or layout issues.
- Pilot agentic coding on one low-risk feature, such as a test suite or a new SwiftUI view, before rolling it out to the whole team.
- Update your CI. Make sure Xcode Cloud or your own runners use the new toolchain.
Looking Back: Xcode 26 Highlights from WWDC 2025
Xcode 26 laid the groundwork for today’s changes. It introduced the integrated AI assistant for code suggestions, inline documentation and smart fixes, a Coding Tools sidebar, easier localization catalogs, voice control for hands-free development, and support for Visual Intelligence and App Intents. It also improved Instruments for profiling CPU, memory, disk and GPU, brought the Swift Testing framework alongside XCTest, and extended Xcode Cloud for builds, parallel tests and TestFlight delivery. If you are still on Xcode 26, these tools remain fully usable, and the upgrade path to Xcode 27 is incremental.
Frequently Asked Questions
Q. What is new in Xcode 27?
A. The main additions are agentic coding with Anthropic, OpenAI and Google agents, the Device Hub that replaces the Simulator, an Apple Silicon-only 30% smaller app, a customizable toolbar with themes, and Xcode Cloud builds that are up to 2x faster.
Q. Does Xcode 27 support Claude?
A. Yes. Apple has announced agents from Anthropic, alongside OpenAI and Google, running directly inside Xcode 27.
Q. Is Xcode 27 Apple Silicon only?
A. Yes. Intel Macs are not supported by Xcode 27, which is also why the app is about 30% smaller.
Q. What replaces the Simulator in Xcode 27?
A. The Device Hub, which combines virtual and physical devices in a single resizable window.
Q. Do I have to adopt Liquid Glass?
A. Apps recompiled with Xcode 27 are reported to adopt the new design automatically, so test your app on iOS 27 before you ship an update.
Q. What is the difference between Xcode 26 and Xcode 27?
A. Xcode 26 introduced a built-in AI assistant. Xcode 27 turns that into full agentic coding, replaces the Simulator with Device Hub, and speeds up Xcode Cloud. See the comparison table above for the full list.
Build Your Next iOS App with 200OK Solutions
Upgrading to Xcode 27 is a good moment to modernize your app. At 200OK Solutions, we build custom iOS and macOS software in Swift and SwiftUI, prepare existing apps for iOS 27 and Liquid Glass, and help teams adopt AI-assisted workflows without losing code quality.
Whether you need an iOS app development company to build from scratch, a team to hire Swift developers, or a fast upgrade audit for your current app, we can help. Talk to our team to turn your idea into an App Store success.
