What's new in Xcode 27?

Here’s what’s new in Xcode 27:

• More customizable workspace

  • A revamped toolbar with more controls moved up top
  • A new three-way editor mode chooser
  • A more flexible branch picker placement
  • Fully customizable toolbar items and layout

• New themes and appearance controls

  • Presets plus sliders to tune themes
  • A new Appearance panel in Settings
  • Brighter standard theme and more vibrant dark appearance options

• Inline issues are less distracting

  • Predictive/live issues now appear more subtly while you type
  • Warnings and errors are visually distinguished more clearly at build time

• Faster starting new projects

  • You can jump into a new app project immediately, without full setup
  • Great for exploring ideas and prototyping quickly

• Coding agents in the editor

  • New entry point for working with coding agents
  • Xcode’s agent features are woven throughout the experience
  • In the broader platform tooling, agents can use project understanding, docs, builds, testing, previews, simulator interactions, localization, debugging, and more

• Device Hub

  • A new way to evaluate apps on devices and simulators
  • Makes it easier to work with files, data containers, app configurations, and multiple form factors

• Post-launch app support

  • Updates for localization
  • Improvements to Organizer
  • Performance tooling with Instruments
  • Easier setup for Xcode Cloud to catch regressions with automated builds and tests

• Other improvements mentioned in the State of the Union

  • Xcode is faster and more reliable overall
  • 30% smaller
  • Apple Silicon only
  • Settings can sync via iCloud
  • New Mac setup is smoother, with Git config and project creation streamlined

If you want, I can also summarize Xcode 27 by area, like workspace, coding agents, Device Hub, or testing/CI.