An IDE redesigned from the hardware up
Xcode 27, announced at the Platforms State of the Union, drops Intel support entirely and becomes Apple Silicon-only. According to MacRumors, the app is 30% smaller and projects load faster — a practical outcome of removing the x86 code path that would have been impossible while maintaining universal compatibility.
Device Hub replaces Simulator
The most concrete workflow change is Device Hub, which replaces the Simulator window with a unified environment where physical and virtual devices coexist. MacRumors describes the feature as supporting live resizing and full hardware control directly from the Mac, making it easier to test layouts across different screen sizes without reconfiguring the test environment each time.
Themes, synced settings, and a faster Xcode Cloud
On the customization front, Xcode 27 adds three new color themes (Emerald, Neon Noir, and Coral Reef) and syncs settings via iCloud. Xcode Cloud sees a meaningful improvement: builds are up to twice as fast and initial workflow setup has been simplified. Apple also confirmed it is working with Anthropic, OpenAI, and Google to bring their agents into Xcode — a detail from the SOTU that adds context to the agentic coding capabilities announced at the keynote.